Dr Katrina Louise Warren (born 8 December 1967) is an Australian veterinarian, best known as the co-host of several popular television programs on the Seven Network.

[1] After working as a fashion model in Japan, Warren first appeared on television screens in the Ten Network's children's program Totally Wild in 1994.

[2] Warren is best known for her appearances from 1997 on the Seven Network family show Harry's Practice as a resident vet.

Warren also presented on the Channel Seven lifestyle show Melbourne Weekender with Jo Silvagni.

[3][4] From 2008 to 2010, Warren worked as a host of the TV Show Housecat Housecall on Animal Planet in the US.