Kaka may refer to:

• Kaká (born 1982), Brazilian footballer Ricardo Izecson dos Santos Leite
• Kaká (footballer, born 1981), Brazilian footballer Claudiano Bezerra da Silva
• Kaká (footballer born 1991), Brazilian footballer David Leonel Faleiro
• Kaka Bag-ao (born 1969), Filipino human rights lawyer, agrarian reform advocate and politician
• Joseph Baptista (1864–1930), Indian politician from Mumbai
• Carlos Eduardo Ferreira Batista (born 1992), Portuguese footballer
• Kazimierz Deyna (1947–1989), Polish footballer
• Kaka Kalelkar (1895-1981), Indian independence activist, social reformer and journalist
• Rajesh Khanna (1942–2012), Bollywood actor, film producer and politician
• Randeep Singh Nabha, Indian politician
• Kaka Radhakrishnan (c. 1925–2012), Indian film actor
• Kaka Joginder Singh (1918–1998), Punjabi politician
• Kaká Werá (born 1964), Brazilian writer and politician
• Kaka Mallam Yale (born 1953), Nigerian politician

Ricardo Izecson dos Santos Leite (; born 22 April 1982), commonly known as Kaká or Ricardo Kaká, is a Brazilian professional footballer who plays as an attacking midfielder for Orlando City SC in Major League Soccer and the Brazil national team.

Carlos Eduardo Ferreira Batista (born 6 October 1992), known as Káká, is a Portuguese footballer who plays for C.F. Os Belenenses, as a left back.

The New Zealand kaka, also known as kaka, (Nestor meridionalis) is a large species of parrot of the superfamily Strigopoidea found in native forests of New Zealand. Two subspecies are recognised. It is endangered and has disappeared from much of its former range.