Theretra indistincta is a moth of the family Sphingidae. It is known from Queensland, Papua New Guinea, Indonesia and Bismarck Archipelago.
They have pink antennae. Pupation takes place in a mottled brown pupa.
Subspecies Theretra indistincta indistincta (Queensland, Papua New Guinea, Indonesia) Theretra indistincta bismarcki Jordan, 1926 (Bismarck Archipelago) Theretra indistincta manuselensis Joicey & Talbot, 1921 (Ceram) Theretra indistincta papuensis Joicey & Talbot, 1921 (Papua New Guinea)
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