Mary Ann is a female name that has a few different synonyms, depending on which aspect of the name you'd like to focus on. In terms of the name Mary itself, common synonyms include Maria, Marie, and Miriam. For the name Ann, similar names include Anna, Anne, and Annette. If you're looking for a more colloquial or slang term for Mary Ann, some people might use the nickname "Mimi" or "Marianne" as a single compound word. Whatever variation of the name you choose, Mary Ann remains a classic and timeless moniker that has stood the test of time.