Billie Lorraine Hammerberg (24 March 1936 – 8 February 1995) was an Australian actress, best known for roles on television and film.

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Hammerberg was an Australian actress best known for her role in the television series Prisoner in 1985 as May Collins. She had previously appeared in the series in a guest role in 1979, playing Valerie Richardson, a jewellery store owner, who is an ex-prisoner who shelters her escapee friend and former cellmate Bea Smith (played by Val Lehman) while she is on the run.

Other TV credits include: Homicide, Bluey, Cop Shop, Carson's Law, Special Squad and Round the Twist She also acted opposite Meryl Streep during a brief appearance in the film A Cry in the Dark.

Hammerberg died of unspecified cancer in Melbourne on 8 February 1995 at the age of 58. She was cremated at Springvale Botanical Cemetery on 13 February 1995.