Lucrezia or Lucrecia may refer to:
- Lucrezia (given name): an Italian name, feminine of the Roman name Lucretius. The etymological origin of the name is debatable, but is thought to come from the Latin lucrum, meaning "profit, wealth". Other sources believe it may be of Etruscan origin, though its original meaning has been lost.
People
- Lucrezia (singer), female Italian singer
- Lucrecia (singer), female Cuban singer
- Lucrezia Aguiari, Italian coloratura soprano
- Lucrezia Borgia (1480–1519), the daughter of Rodrigo Borgia, who became Pope Alexander VI
- Lucrezia Bori, Spanish opera singer
- Lucrecia Crescent, minor character in the video game Final Fantasy VII
- Lucrezia d'Alagno (1430–1479), close acquaintance of Alfonso V of Naples
- Several women named Lucrezia de' Medici
- Lucrécia Jardim (born 1971), Portuguese athlete
- Lucrecia Kasilag (1917–2008), Filipino composer
- Lucrecia Martel (born 1966), Argentinian film director
- Lucrezia Noin, character from the anime Mobile Suit Gundam Wing
- Lucrezia Smith, character in Virginia Woolf's 1925 novel Mrs Dalloway
- Lucrezia Tornabuoni, Italian poet
- The sound of Lucrecia, Colombian producer and singer
Other
- Lucrezia Borgia (opera), opera by Gaetano Donizetti.
- Lucrezia Borgia was the name Buffalo Bill gave to his gun.