- Jacinto VillalbaPosition: forwardBorn: February 8, 1924
- Jack DuránPosition: forwardBorn: 1991
- Jacob RigoniNationality: Italy, AustraliaBorn: December 10, 1998
- Jacopo AlbertiNationality: ItalyBorn: August 31, 2006
- Jacopo BertoncinNationality: ItalyBorn: June 16, 2006
- Jacopo FaninNationality: Italy, NorwayBorn: May 28, 2005
- Jacopo GarutiNationality: ItalyBorn: November 12, 2004
- Jacopo GiachettiPosition: point guardNationality: Italy
- Jacopo MercanteNationality: ItalyBorn: July 30, 1990
- Jacopo RapettiNationality: ItalyBorn: November 8, 2004
- Jacopo TobaldiNationality: ItalyBorn: June 15, 1992
- Jacopo ValentiniPosition: shooting guardNationality: Italy
- Jacopo Van Der KnaapNationality: Kingdom of the Netherlands, ItalyBorn: March 11, 2003
- Jacopo VogognaNationality: ItalyBorn: January 24, 2009
- Jade Silvia Guidolin DuncanNationality: Italy, United KingdomBorn: January 12, 2002
- Jahir ButrónPosition: centre-backBorn: October 30, 1975
- Jaime DragoPosition: midfielderBorn: January 14, 1959
- Jaime DuartePosition: defenderBorn: February 27, 1955
- Jaime HuertaPosition: defenderBorn: August 8, 1987
- Jaime La TorrePosition: forwardBorn: August 11, 1986
- Jaime LinaresPosition: midfielderBorn: May 7, 1983
- Jaime MosqueraPosition: forwardBorn: 1946
- Jaime MuroPosition: goalkeeperBorn: October 10, 1977
- Jaime RuizPosition: attackerBorn: May 23, 1935
- Jair BaylónPosition: forwardBorn: February 26, 1989
- Jair CéspedesPosition: wing halfBorn: May 22, 1984
- Jair CórdovaPosition: forwardBorn: August 18, 1996
- Jair ToledoPosition: defenderBorn: June 22, 1996
- Jair YglesiasPosition: full-backBorn: February 10, 1981
- Jairo ConchaPosition: midfielderBorn: May 27, 1999
- Jairo HernándezPosition: midfielderBorn: March 2, 1990
- Jairo TalledoPosition: full-backBorn: March 19, 1987
- Jairo VélezPosition: forwardBorn: April 21, 1995
- Jalen MontonatiNationality: United States, ItalyBorn: May 7, 2007
- Jami MontagninoPosition: shooting guardNationality: United States, Italy
- Jan BudinPosition: shooting guardNationality: Italy
- Jankarlo ChirinosPosition: forwardBorn: March 30, 1988
- Jansey Noel DaraniNationality: Italy, SwitzerlandBorn: November 26, 2002
- Jasmin RedditiNationality: Italy, MoroccoBorn: December 19, 2006
- Jason Lee SturaNationality: Italy, United StatesBorn: March 26, 1971
- Jason MaileNationality: Italy, United StatesBorn: January 24, 1974
- Javier CabreraPosition: defensive midfielderBorn: July 19, 1965
- Javier CarneroPosition: forwardBorn: July 13, 1988
- Javier ChirinosPosition: midfielderBorn: May 8, 1960
- Javier ChumpitazPosition: defenderBorn: January 4, 1984
- Javier CáceresPosition: attackerBorn: September 8, 1939
- Javier GonzálezPosition: midfielderBorn: May 11, 1939
- Javier NaveaPosition: midfielderBorn: May 11, 2003
- Javier Núñez MendozaPosition: midfielderBorn: January 23, 1997
- Javier SalazarPosition: centre-back, defenderBorn: March 11, 1983
- Javier SoriaPosition: midfielderBorn: December 15, 1974
- Jayson GrangerPosition: point guardNationality: Uruguay, Italy
- Jean Carlos CaneloNationality: Dominican Republic, ItalyBorn: April 6, 1989
- Jean DezaPosition: wing halfBorn: June 9, 1993
- Jean FerrariPosition: midfielderBorn: July 29, 1975
- Jean Paul MaravíPosition: midfielderBorn: April 27, 1994
- Jean Pierre ArchimbaudPosition: midfielderBorn: August 16, 1994
- Jean Pierre CáncarPosition: full-backBorn: July 8, 1987
- Jean Pierre FuentesPosition: midfielderBorn: October 18, 1991
- Jean TragodaraPosition: midfielderBorn: December 16, 1985
- Jean-Pierre RhynerPosition: defenderBorn: March 15, 1996
- Jeff BrooksPosition: power forwardNationality: United States, Italy
- Jefferson FarfánPosition: forwardBorn: October 26, 1984
- Jefferson PortalesPosition: defenderBorn: November 29, 1997
- Jeffrey ColladonNationality: ItalyBorn: July 26, 1972
- Jeffrey ViggianoPosition: small forwardNationality: United States, Italy
- Jeickson ReyesPosition: full-backBorn: October 9, 1987
- Jeisson MartínezPosition: forwardBorn: May 27, 1992
- Jenna RubinoNationality: Italy, United StatesBorn: February 21, 1985
- Jeremiah SolaNationality: Italy, United StatesBorn: September 12, 1981
- Jeremy AguirrePosition: forwardBorn: February 20, 1999
- Jeriel De SantisPosition: forwardBorn: 2002
- Jerry TamashiroPosition: forwardBorn: March 18, 1971
- Jersi SócolaPosition: defenderBorn: July 7, 1990
- Jersson VásquezPosition: full-backBorn: March 5, 1986
- Jessica PonaNationality: Belgium, ItalyBorn: April 8, 1982
- Jesús ArismendiPosition: defenderBorn: March 25, 1987
- Jesús CastilloPosition: midfielderBorn: June 11, 2001
- Jesús Chávez SalazarPosition: midfielderBorn: March 5, 1986
- Jesús CisnerosPosition: goalkeeperBorn: March 18, 1978
- Jesús GoyzuetaPosition: goalkeeperBorn: February 9, 1947
- Jesús PeláezBorn: June 20, 1940Sport: association football
- Jesús PeñaPosition: midfielderBorn: October 18, 1990
- Jesús PretellPosition: midfielderBorn: March 26, 1999
- Jesús PurizagaPosition: goalkeeperBorn: December 24, 1959
- Jesús RabanalPosition: full-backBorn: December 25, 1984
- Jesús ÁlvarezPosition: centre-back, defenderBorn: August 26, 1981
- Jhair SotoPosition: defenderBorn: June 3, 2003
- Jhamir D'ArrigoPosition: forwardBorn: November 15, 1999
- Jhilmar LoraPosition: full-backBorn: October 24, 2000
- Jhoao VelásquezPosition: defenderBorn: August 2, 2005
- Jhoao WardPosition: forwardBorn: May 4, 1989
- Jhoel HerreraPosition: defenderBorn: July 9, 1980
- Jhon Rebatta LamBorn: April 23, 1999Sport: association football
- Jhonnier Montaño Jr.Position: midfielderBorn: December 30, 2004
- Jhonny BravoPosition: midfielderBorn: December 5, 1985
- Jhonny OlórteguiPosition: forwardBorn: July 30, 1985
- Jhonny VidalesPosition: wing halfBorn: April 21, 1992
- Jhordan CamposPosition: defenderBorn: September 15, 1995
- Jhosely GamarraPosition: midfielderBorn: June 24, 2002
- Jhoys NogueiraPosition: midfielderBorn: June 3, 1981
- Jimmy FloresPosition: defenderBorn: October 10, 1984
- Joao GrimaldoPosition: forwardBorn: February 20, 2003
- Joao Pereira FloresPosition: defenderBorn: November 10, 1983
- Joao VillamarínPosition: forwardBorn: March 2, 1992
- Joaquin Federico GiarraffaNationality: Argentina, ItalyBorn: June 1, 1995
- Joaquín Aguirre LuzaPosition: midfielderBorn: July 24, 1995
- Joazhiño ArroePosition: wing halfBorn: June 5, 1992
- Joel PintoPosition: goalkeeperBorn: June 5, 1980
- Joel QuispeBorn: April 7, 1982Sport: association football
- Joel SánchezPosition: midfielderBorn: June 11, 1989
- Joel ZacchettiPosition: power forwardNationality: Italy
- Johan FanoPosition: forwardBorn: August 9, 1978
- Johan ReyPosition: forwardBorn: February 28, 1992
- Johan SotilPosition: wing halfBorn: August 29, 1982
- Johan VásquezPosition: midfielderBorn: October 8, 1984
- John FajardoPosition: defenderBorn: February 24, 1989
- John GalliquioPosition: centre-backBorn: January 12, 1979
- John HinostrozaPosition: midfielderBorn: February 22, 1980
- John RandazzoNationality: Italy, United StatesBorn: May 9, 1977
- Johnny LalopúPosition: defenderBorn: May 25, 1982
- Johnny Vegas FernándezPosition: goalkeeperBorn: February 9, 1976
- Johnny WatsonPosition: forwardBorn: March 12, 1962
- Jona Di GiuliomariaNationality: ItalyBorn: February 15, 2002
- Jonathan AcasietePosition: defenderBorn: November 10, 1988
- Jonathan MedinaPosition: goalkeeperBorn: April 29, 1993
- Joonatan Tormi MetlsaNationality: ItalyBorn: January 5, 2005
- Jordan GuivinPosition: midfielderBorn: 1998
- Jorge AlegríaPosition: forwardBorn: April 8, 1980
- Jorge AraujoPosition: defenderBorn: November 30, 1979
- Jorge BosmedianoPosition: defenderBorn: February 16, 1991
- Jorge CabezudoBorn: October 21, 2001Sport: association football
- Jorge CorderoPosition: midfielderBorn: January 6, 1962
- Jorge del CastilloPosition: midfielderBorn: September 28, 2004
- Jorge EsparzaPosition: midfielderBorn: June 22, 1993
- Jorge EspejoPosition: midfielderBorn: August 20, 1976
- Jorge GóngoraPosition: forwardBorn: October 12, 1906
- Jorge HiranoPosition: forwardBorn: August 16, 1956
- Jorge HuamánPosition: defenderBorn: April 11, 1977
- Jorge Lizarbe ValientePosition: midfielderBorn: 1914
- Jorge LozadaPosition: forwardBorn: March 30, 1987
- Jorge MalpartidaPosition: forwardBorn: July 21, 1991
- Jorge MolinaPosition: midfielderBorn: March 5, 1987
- Jorge Navarrete FuentesPosition: midfielderBorn: July 21, 1990
- Jorge OlaecheaPosition: defenderBorn: August 27, 1956
- Jorge PardonPosition: goalkeeperBorn: March 4, 1905
- Jorge ParróBorn: 2000Sport: association football
- Jorge Ramírez TabacchiPosition: forwardBorn: September 7, 1975
- Jorge Reyes CondoriPosition: defenderBorn: May 18, 1981
- Jorge RifattiPosition: centerNationality: Argentina, Italy
- Jorge RíosPosition: midfielderBorn: December 7, 1999
- Jorge SarmientoPosition: forwardBorn: November 2, 1900
- Jorge SotoPosition: midfielderBorn: October 27, 1971
- Jorge TalaveraPosition: midfielderBorn: December 31, 1963
- Jorge VásquezPosition: forwardBorn: July 29, 1937
- Jorge Ágapo GonzalesBorn: March 25, 1967Sport: association football
- Jose EscajadilloPosition: midfielderBorn: December 1942
- Josef ChávezPosition: defenderBorn: August 12, 1990
- Joselito CarreraPosition: goalkeeperBorn: July 21, 1980
- Joseph MuñozPosition: defenderBorn: January 6, 1990
- Josepmir BallónPosition: midfielderBorn: March 21, 1988
- Josimar AtochePosition: midfielderBorn: September 29, 1989
- Josimar VargasPosition: midfielderBorn: April 6, 1990
- Josuee HerreraPosition: wing halfBorn: February 4, 1999
- Josè BoveNationality: ItalyBorn: November 8, 1970
- José AguayoPosition: defenderBorn: October 25, 1955
- José AlegríaPosition: midfielderBorn: October 5, 1980
- José Andrés CarranzaPosition: forwardSport: association football
- José Arana CruzPosition: midfielderBorn: September 6, 1902
- José ArnillasPosition: forwardBorn: October 22, 1992
- José BalbuenaPosition: forwardBorn: October 3, 1917
- José BolívarPosition: forwardBorn: January 17, 2000
- José BustamantePosition: forwardBorn: January 15, 2000
- José CanovaPosition: centre-backBorn: September 30, 1992
- José Carlos FernándezPosition: forwardBorn: May 14, 1983
- José CarvalloPosition: goalkeeperBorn: March 1986
- José CasanovaPosition: midfielderBorn: May 12, 1964
- José CorcueraPosition: midfielderBorn: August 6, 1981
- José CotrinaPosition: midfielderBorn: August 8, 1997
- José Cáceres ZevallosPosition: midfielderBorn: January 25, 1995
- José del CastilloPosition: midfielderBorn: May 10, 1943
- José del SolarPosition: midfielderBorn: November 28, 1967
- José FernándezPosition: defenderBorn: February 14, 1939
- José Gallardo FloresPosition: forwardBorn: February 15, 2001
- José González GanozaPosition: goalkeeperBorn: July 10, 1954
- José GrandaPosition: defenderBorn: April 13, 1992
- José GuidinoPosition: defenderBorn: September 4, 1996
- José HonoresPosition: defenderBorn: February 2, 1989
- José IngaPosition: midfielderBorn: October 7, 1999
- José Julio Espinoza ValerianiPosition: midfielderBorn: June 23, 1974
- José LeyvaPosition: forwardBorn: February 15, 1952
- José Luis CarranzaPosition: midfielderBorn: January 8, 1964
- José Luis ChacónPosition: defenderBorn: November 6, 1971
- José Luis ReynaPosition: defenderBorn: January 14, 1972
- José Luis VásquezPosition: forwardBorn: January 9, 1957
- José LujánPosition: defenderBorn: January 12, 1997
- José ManzanedaPosition: midfielderBorn: September 10, 1994
- José María Córdova AliagaPosition: forwardBorn: July 2, 1986
- José María LavallePosition: forwardBorn: April 21, 1902
- José María ParedesPosition: defenderBorn: April 1996
- José Mendoza ZambranoPosition: midfielder, full-backBorn: June 24, 1982
- José MesarinaPosition: full-backBorn: November 15, 1988
- José MoiselaPosition: full-backBorn: June 25, 1980
- José MoralesPosition: forwardBorn: March 15, 1910
- José NavarroPosition: defenderBorn: September 24, 1948
- José ParodiBorn: September 27, 1997Sport: association football
- José PeredaPosition: midfielderBorn: September 8, 1973
- José Ramírez CubasPosition: defenderBorn: April 16, 1962
- José RiveraPosition: forward, wing halfBorn: May 8, 1997
- José ShoroPosition: forwardBorn: July 10, 1989
- José SigüeñasPosition: defenderBorn: August 30, 1990
- José SotoPosition: centre-backBorn: January 11, 1970
- José YancesPosition: midfielderBorn: October 3, 1984
- José Zamora GonzalesPosition: centre-backBorn: January 24, 1987
- José ZavalaPosition: defenderBorn: December 14, 1988
- José ZevallosPosition: defenderBorn: January 13, 1999
- José ZuritaPosition: midfielderBorn: May 5, 1995
- Jovan FilipovicNationality: Serbia, ItalyBorn: January 12, 2004
- Joyce CondePosition: forwardBorn: September 8, 1991
- Juan Alfonso VallePosition: midfielderBorn: 1905
- Juan ArcePosition: midfielderBorn: January 9, 1990
- Juan BarredaPosition: midfielderBorn: March 20, 1993
- Juan Carlos BazalarPosition: midfielderBorn: February 23, 1968
- Juan Carlos CabanillasPosition: midfielderBorn: May 2, 1963
- Juan Carlos MariñoPosition: midfielderBorn: January 2, 1982
- Juan Carlos OblitasPosition: forwardBorn: February 16, 1951
- Juan Carlos ZubczukPosition: goalkeeperBorn: March 31, 1965
- Juan Carrillo BarbadilloPosition: forwardBorn: May 12, 1977
- Juan CastellanosPosition: forwardBorn: June 15, 1990
- Juan Castillo GrandjeanPosition: midfielderBorn: August 22, 1924
- Juan ComingesPosition: midfielderBorn: October 1983
- Juan CriadoPosition: goalkeeperBorn: June 24, 1913
- Juan Diego González-VigilPosition: forwardBorn: February 18, 1985
- Juan Diego GutiérrezPosition: midfielderBorn: April 28, 1992
- Juan Diego LiPosition: defenderBorn: February 16, 1995
- Juan Emilio SalinasPosition: forwardBorn: July 12, 1925
- Juan Eugenio Rostaing La TorrePosition: defenderBorn: May 16, 1903
- Juan FernándezPosition: shooting guard, point guardNationality: Italy, Argentina
- Juan FloresPosition: goalkeeperBorn: February 25, 1976
- Juan FloresPosition: forwardSport: association football
- Juan Francisco HernándezPosition: centre-backBorn: June 24, 1978
- Juan GoyonechePosition: goalkeeperBorn: October 14, 1985
- Juan HonoresPosition: goalkeeperBorn: March 4, 1915
- Juan HuangalPosition: midfielderBorn: January 29, 1997
- Juan IllescasBorn: 1959Sport: association football
- Juan José BarrosPosition: forwardBorn: June 24, 1989
- Juan José JayoPosition: midfielderBorn: January 20, 1973
- Juan José MuñantePosition: wing halfBorn: June 12, 1948
- Juan José OréPosition: forwardBorn: June 12, 1954
- Juan JoyaPosition: wing halfBorn: February 25, 1934
- Juan LunaPosition: forwardBorn: May 8, 1977
- Juan Manuel CáceresNationality: Italy, ArgentinaBorn: March 12, 1984
- Juan Manuel Olivares DordanPosition: defenderBorn: January 10, 1974
- Juan Manuel Saavedra NavarroPosition: defenderBorn: November 1977
- Juan Manuel VargasPosition: full-backBorn: October 5, 1983
- Juan Marcos CasiniPosition: shooting guardNationality: Argentina, Italy
- Juan MontenegroPosition: midfielderBorn: September 22, 1975
- Juan MoralesPosition: midfielderBorn: March 6, 1989
- Juan MostoPosition: defenderBorn: January 23, 1936
- Juan NakayaPosition: midfielderBorn: December 31, 1983
- Juan Pablo BegazoPosition: goalkeeperBorn: May 18, 1988
- Juan Pablo CanteroPosition: point guardNationality: Italy, Argentina
- Juan Pablo FarfánPosition: defenderBorn: February 2, 1985
- Juan Pablo SartorelliPosition: point guardNationality: Italy, Argentina
- Juan Pablo VergaraPosition: midfielderBorn: February 24, 1985
- Juan PajueloPosition: defenderBorn: September 23, 1974
- Juan QuispePosition: defenderBorn: October 3, 1914
- Juan QuiñónezPosition: forwardBorn: June 14, 1987
- Juan Raúl NeiraPosition: midfielderBorn: May 7, 1995
- Juan Rivero VillarBorn: June 24, 1909Sport: association football
- Juan SeminarioPosition: forwardBorn: July 22, 1936
- Juan ValdiviesoPosition: goalkeeperBorn: May 6, 1910
- Juan VenturaPosition: midfielderBorn: February 26, 1992
- Juan YangaliPosition: defensive midfielderBorn: March 3, 2000
- Juan ZevallosPosition: defender, full-backBorn: July 7, 1990
- Julia SuarezPosition: forwardBorn: November 1996
- Julian SomviNationality: ItalyBorn: May 1, 1989
- Julio AliagaPosition: goalkeeperBorn: July 26, 1989
- Julio AparicioPosition: forwardBorn: January 30, 1955
- Julio AyllónPosition: forwardBorn: 1910
- Julio BaylónPosition: wing halfBorn: December 10, 1947
- Julio César AntónPosition: midfielderBorn: June 28, 1959
- Julio César BalerioPosition: goalkeeperBorn: April 19, 1958
- Julio César de Andrade MouraPosition: forwardBorn: October 31, 1965
- Julio César UribePosition: midfielderBorn: May 9, 1958
- Julio Edson UribePosition: midfielderBorn: May 9, 1982
- Julio GarcíaPosition: midfielderBorn: June 16, 1981
- Julio IllescasPosition: midfielderBorn: March 16, 1985
- Julio MeléndezPosition: defenderBorn: April 11, 1942
- Julio MázzaroPosition: shooting guardNationality: Italy, Argentina
- Julio QuintanaPosition: midfielderBorn: July 13, 1904
- Julio RiveraPosition: full-backBorn: April 12, 1967
- Julio TalaviñaPosition: forwardBorn: May 27, 1989
- Julius RengifoPosition: forwardBorn: March 22, 1991
- Junior AguirrePosition: forwardBorn: March 10, 1992
- Junior HuertaPosition: defenderBorn: April 19, 1989
- Junior NuñezPosition: midfielderBorn: July 28, 1989
- Junior PoncePosition: midfielder, forwardBorn: February 16, 1994
- Junior RossPosition: wing halfBorn: February 19, 1986
- Junior VizaPosition: midfielderBorn: April 3, 1985
- Juvenal BriceñoPosition: forwardBorn: December 11, 1965