The Easy Rider star's first wife, Brooke Hayward, his daughter Marin, and several of his pals, including director Dwight Yoakam and artist Ed Ruscha, all attended the touching service on the Santa Monica Pier.
Eulogies were read out by Hopper's art dealer friend Tony Shafrazi and Yoakam, who also sang during the memorial.
It was held just a day after the opening of an exhibition of the actor's artwork, entitled Double Standard, at Los Angeles' Geffen Contemporary, which is part of the Museum of Contemporary Art (MOCA).
The display, featuring 200 pieces, is described as the "first comprehensive survey of Hopper's prolific work" and showcases his art, film, photography and sculpture works.
During the opening on Sunday (11Jul10), MOCA director Jeffrey Deitch praised the late star's talent. He says, "His fusion of artistic media has become an inspiration for the new artistic generation who often draw on performance and film as well as painting, sculpture, and photography in the creation of their work."