Annette Marie Sarah Kellermann (July 6, 1887 – November 6, 1975) was an Australian professional swimmer, vaudeville star, film actress, writer, and business owner.
Kellermann was one of the first women to wear a one-piece bathing costume, instead of the then-accepted pantaloons, and inspired others to follow her example. Kellerman’s swimming costumes became so popular, that she started her own fashion line of one-piece bathing suits. Kellermann helped popularize the sport of synchronized swimming; and authored a swimming manual. She appeared in several movies, usually with aquatic themes, and as the star of A Daughter of the Gods was the first major actress to appear nude in a Hollywood production. Kellermann was an advocate of health, fitness, and natural beauty throughout her life.