Hac Sa Beach (Portuguese: Praia de Hác Sá; Chinese: 黑沙海灘) is a beach in Coloane, Macau.

The name "Hac Sa", a transliteration from Cantonese (Chinese: 黑沙; Cantonese Yale: Hāksā), literally means "black sand".

However, to prevent the beach from disappearing due to erosion, the Macau government has refilled the beach with yellow sand artificially.

The beach is located near Hac Sa Reservoir Country Park.

[1] A stream that originates from Hac Sa Reservoir runs through the central area of the beach.