Lillihina Reserve is a small urban reserve located in the suburb of Cromer.

This gully reserve contains a natural creekline and it is surrounded by urban development on all sides.

The reserve supports three vegetation communities Wet Sclerophyll Forest, Sandstone Gully Rainforest and Sydney Coastal Dry Sclerophyll Forest which provide important habitat for local native fauna.

The reserve supports a population of Powerful Owls, a listed Threatened Species.