Aida is a surname. As a Japanese surname, it is written or . Notable people with the surname include:
, Japanese historian , Japanese photographer , Japanese rower , contemporary Japanese artist or Masae Aida (会田 昌江, 1920–2015), Japanese actress Miriam Aïda (born 1974), Swedish jazz singer , Japanese poet and calligrapher , Japanese voice actress , Japanese voice actor , Japanese popular music artist and actress , Japanese architect , Japanese award-winning polymer chemist Tita Aida, American activist and advocate for HIV/AIDS awareness , Japanese mathematician , Japanese manga author and illustrator , Japanese model and AV idol , Japanese footballer , Japanese baseball player