Chimalpilli I was a tlatoani (ruler) of the Aztec altepetl (city-state) of Ecatepec from 1428 until his death in 1465.

Chimalpilli was a son of Chichimecacihuatzin II.

Her father was an Aztec emperor Moctezuma I and her mother was queen Chichimecacihuatzin I.

[2] His father was Huehue Huanitzin, a "great leader" of Itztapalapan.

His successor was Tezozomoc, son of Emperor Chimalpopoca.