Emily Mabel Tustin (25 March 1884 – 9 September 1967) was a New Zealand photographer.

[1][2] Her portraits of people and bridal parties are held in the collection of Museum of New Zealand Te Papa Tongarewa.

In 1907 after her father was imprisoned, she moved to Whanganui to work at Frank Denton's studio.

During the first world war she worked in Wellington in various retouching roles, including government commissions.

[6] She ran her portrait photography business, Mabel Trustin's Studio, from premises in central Wellington—initially on Lambton Quay and later on Courtney Place—from 1921 to the mid-1940s.