Ada may refer to:
Augusta Ada King-Noel, Countess of Lovelace (née Byron; 10 December 1815 – 27 November 1852) was an English mathematician and writer, chiefly known for her work on Charles Babbage's proposed mechanical general-purpose computer, the Analytical Engine.
Adam and Eve, according to the creation myth of the Abrahamic religions, were the first man and woman and the ancestors of all humans.
Adam Noah Levine (born March 18, 1979) is an American singer, songwriter, multi-instrumentalist, actor, and record producer.
Adam Smith FRSA (16 June 1723 NS (5 June 1723 OS) – 17 July 1790) was a Scottish economist, philosopher, and author.
In biology, an adaptation, also called an adaptive trait, is a trait with a current functional role in the life of an organism that is maintained and evolved by means of natural selection.
Adam Mitchel Lambert (born January 29, 1982) is an American singer, songwriter and stage actor. Since 2009, he has sold over 3 million albums and 5 million singles worldwide.
Adam Ant (born Stuart Leslie Goddard; 3 November 1954) is an English singer and musician. He gained popularity as the lead singer of post-punk group Adam and the Ants and later as a solo artist, scoring 10 UK top ten hits from 1980 to 1983, including three UK No.
Adam Carolla (born May 27, 1964) is an American comedian, radio personality, television host, actor, podcaster, author and director.
Adam Warlock, originally known as Him, is a fictional character appearing in American comic books published by Marvel Comics.