Ida is a surname. Notable people with the surname include:
*
Antoinette Nana Djimou Ida (born 1985), French-Cameroonian heptathlete
*, Japanese cricketer
*
Ibrahim M. Ida (born 1949), Nigerian politician
*
James Ida (born 1940), New York gangster
*
Joseph Ida (1890–?), American gangster and head of the Philadelphia mob in the 1940s and 1950s
*, Japanese lieutenant colonel who conspired to overthrow the government near the end of World War II
*, Japanese curler
{{surname
Japanese-language surnames