Heiward Mak Hei-yan (Chinese: 麥曦茵; Jyutping: mak6 hei1 jan1) is a Hong Kong film director, writer and producer. Her work has been featured at various international film festivals including Singapore, Bratislava and Fribourg. In 2011, she won a Hong Kong Film Award for Best Screenplay for her writing on Love in a Puff.