Khoya or Khoja is a Malabar Muslim surname and a masculine Japanese given name. Notable people with the name include:
Surname: Kwaja (Koya-Malabar) Sidiq Koya (1924–1993), Fijian-Indian politician and opposition leader C. H. Mohammed Koya (1927–1983), Indian politician and Chief Minister of Kerala P. P. Ummer Koya (1922–2000), Indian politician P. Pookunhi Koya (born 1949), Indian politician Mammukoya (born 1946), Malayalam film actor
Given name: Koya Nishikawa (born 1942), Japanese politician Koya Shimizu (born 1982), Japanese footballer
Fictional characters: Koya, a Teenage Mutant Ninja Turtles character Koya Marino, a Crush Gear Turbo character