Kishore Kumar (born Abhas Kumar Ganguly; ; 4 August 1929 – 13 October 1987) was an Indian playback singer, musician and actor. He is widely regarded as one of the greatest, most influential and dynamic singers in the history of modern Indian music. Kumar was one of the most popular singers in the Indian subcontinent, notable for his yodelling and ability to sing songs in different voices. He used to sing in different genres but some of his rare compositions, considered classics, were lost in time.

Besides Hindi, he sang in many other Indian languages, including Bengali, Marathi, Assamese, Gujarati, Kannada, Bhojpuri, Malayalam, Odia and Urdu. He also released a few non-film albums in multiple languages, especially in Bengali, which are noted as all-time classics. According to his brother and legendary actor Ashok Kumar, Kishore Kumar was successful as a singer because his "voice hits the mike, straight, at its most sensitive point".

Kumar was also active in acting too. His first film appearance was in Shikari (1946), in which his brother, Ashok played the lead role. Kumar played his first lead in the Bombay Talkies film Andolan (1951). Although he got some acting assignments with the help of his brother, he was more interested in becoming a singer. After the success of films such as Ladki, Char Paise and Baap Re Baap that Kumar developed an interest in acting seriously, which resulted in him having successful films as the lead actor between 1955 and 1966. Kumar starred in Bimal Roy's Naukari (1954) and Hrishikesh Mukherjee's directorial debut Musafir (1957).

As an actor, his best period was between 1954 and 1968. He won 8 Filmfare Award for Best Male Playback Singer out of 28 nominations and holds the record for winning and nominating the most Filmfare Awards in that category. He was awarded the Lata Mangeshkar Award by the Madhya Pradesh government in 1985. In 1997, the Madhya Pradesh Government initiated an award called the "Kishore Kumar Award" for contributions to Hindi cinema. In 2012, his unreleased last song sold for ₹15.6 lakh ($185,000 USD) at the Osian's Cinefan Auction in New Delhi.