Idalaka (Portuguese: Idalaca) is a Malayo-Polynesian dialect chain spoken in East Timor.

The Idalaka dialects are closely related to Tetum and Habun, while they exhibit many similarities with Galoli.

Idalaka also resembles the Kemak language in that there are archaic features such as personal prefixes in verbs, which are lost in Mambai and Tokodede.

The 2015 census recorded 19,913 people in East Timor as native speakers of Idalaka dialects.

[3] Idaté (Idate) is the vernacular in Laclubar (Manatuto Municipality) and the bordering area in adjacent Manufahi.