Godfrey Alan "Goff" Letts CBE AM (18 January 1928 – 10 March 2023) was the Majority Leader of the Northern Territory of Australia from 1974 to 1977.

Awarded a Churchill Fellowship in 1966, Letts was appointed to the Northern Territory Legislative Council in 1967 as an official (non-elected) member representing the Department of Lands and Primary Industry.

His growing disillusionment with the bureaucratic control of the Territory from Canberra led him to resign from those positions in 1970 to enter private industry as a vet.

Letts' ousting was particularly surprising given that it is almost unheard of for major-party leaders at the federal, state or territory level in Australia to lose their own seat.

Made a Trustee of the World Wildlife Fund in 1981, Letts resigned from his position at the Conservation Commission in 1983 to stand as an independent for the Alice Springs-based seat of Araluen at the 1983 Territory election, in opposition to the CLP's attitudes towards the Commonwealth and Indigenous people.