Trinchesia sibogae is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Trinchesiidae.

[2] This species was described from Kangean Island, Indonesia.

Trinchesia sibogae is widespread throughout the tropical waters of the Indo-West Pacific region.

[3] This species is large for this family, with a maximum size of 35 mm length.

[4]