The Admiralty spiny skink (Tribolonotus brongersmai), also known commonly as Brongersma's helmet skink, is a species of lizard in the family Scincidae.

The species is endemic to the Admiralty Islands.

[2] The specific name, brongersmai, is in honor of Dutch herpetologist Leo Brongersma.

[3] The natural habitat of T. brongersmai is unknown.

The holotype was collected on a copra plantation, beneath a pile of rotting coconut husks.