Adomeit is a Germanized form of the Baltic-origin surname Adomaitis meaning "son of Adam". Notable people with the surname include:

• Caroline Adomeit [de], German violinist and composer
• George Adomeit (1879–1967), American painter and printmaker
• Hannes Adomeit (1942 – 2022), German political scientist and analyst
• Kai Adomeit [de] (born 1968), German pianist
• Katja Adomeit [no], Danish film producer and director
• Klaus Adomeit [de] (1935-2019), German legal scholar
• Martin Adomeit [de] (born 1963), German table tennis coach
• Ruth E. Adomeit (1910–1996), American author, editor, collector of miniature books and philanthropist; daughter of George

• Adomaitis (Lithuanian form)
• (Horst) Ademeit (similar name)