Kati Lehtonen (née Pulkkinen, born 6 April 1975) is a Finnish former cross-country skier who competed from 1995 to 2002.

Lehtonen's best individual finish at the Winter Olympics was 51st in the 5 km + 10 km combined pursuit at Nagano in 1998.

Her only individual victory was in a 5 km event in Finland in 1997.

All results are sourced from the International Ski Federation (FIS).

This biographical article relating to Finnish cross-country skiing is a stub.