A handful of close friends were on-hand for the sunset ceremony, in which the "Spider-Man" and "Seabiscuit" star wed Jennifer Meyer on Hawaii's Big Island, In Touch said.
Details weren't disclosed, but it is believed one of the wedding guests was actor Lukas Haas.
Sources told In Touch Maguire’s best friend, Leonardo DiCaprio, was invited to the wedding but could not attend because his film "Body of Lies" is in production.
Maguire, 32, dated the 30-year-old daughter of Universal Studios head Ron Meyer for four years. They announced their engagement in April last year shortly after she became pregnant with their daughter Ruby.