Maria Katrina Irene Halili (born January 4, 1986 in Quezon City, Philippines), is a kapuso actress. She is an alumna of the StarStruck talent search and was a favorite cover girl of FHM Philippines and ranked second in their 2006 list of 100 Sexiest Women in the World.

She is part-Chinese, a fact that she has mentioned in several of her interviews. She appears in several shows of GMA Network as an antagonist but in Atlantika, she is one of the protagonists.
Although born in Quezon City, she grew up in Palawan where she joined a province-wide beauty contest, representing the municipality of El Nido. She is the only Starstruck finalist who did not audition at the audition studio. She was interviewed in a café. Still, she earned a slot at the Final 14.

Katrina Halili is voted no. 13 Most Beautiful Filipina.