- Kamila CuchilloPosition: midfielderBorn: November 8, 1999
- Karl FernándezPosition: midfielderBorn: April 22, 1987
- Karla CongaPosition: full-backBorn: January 23, 1994
- Karlo CalcinaPosition: midfielderBorn: March 3, 1984
- Karol LebogangPosition: wing half, full-backBorn: March 6, 1997
- Katia SciontiNationality: ItalyBorn: 1975
- Kazuyoshi ShimabukuBorn: July 29, 1999Sport: association football
- Kelvin Denis Sanchez VasquezPosition: midfielderBorn: January 3, 1999
- Kenji CabreraPosition: wingerBorn: January 27, 2003
- Kennedy ImadeNationality: ItalyBorn: December 2, 2005
- Kenneth ViglianisiPosition: shooting guardNationality: Germany, Italy
- Kenny FlorianPosition: midfielderBorn: May 26, 1976
- Kerwin PeixotoPosition: defenderBorn: February 21, 1988
- Kevin BollaNationality: ItalyBorn: May 30, 1990
- Kevin FerreyraPosition: forwardBorn: June 7, 1999
- Kevin LischPosition: shooting guard, point guardNationality: United States, Italy, Australia
- Kevin QuevedoPosition: attackerBorn: February 22, 1997
- Kevin RamírezPosition: midfielderBorn: June 10, 1993
- Kevin RuízPosition: forwardBorn: February 14, 1995
- Kevin SandovalPosition: midfielderBorn: May 3, 1997
- Kiara CalmetPosition: forwardBorn: August 9, 2002
- Kiara OrtegaPosition: defenderBorn: February 13, 1992
- Kike RodríguezPosition: centre-backBorn: September 6, 1991
- Kira BileckyPosition: defenderBorn: April 12, 1986
- Klarisa ZylaNationality: Albania, ItalyBorn: May 25, 2008
- Klaudio NdojaPosition: power forwardNationality: Italy, Albania
- Klea SyziuNationality: Albania, ItalyBorn: June 15, 2011
- Kluiverth AguilarPosition: full-backBorn: May 5, 2003
- Koichi AparicioPosition: centre-back, defenderBorn: June 6, 1992
- Kurt Chanel KabundaNationality: ItalyBorn: January 26, 1989