Lillian Ross (born in Hamilton, Ontario) is a former politician in Ontario, Canada. She was a Progressive Conservative member of the Legislative Assembly of Ontario from 1995 to 1999.

Before entering politics, she was a chair of the Great Ride to Beat Cancer and a member of Canadians Against Violence Everywhere Advocating its Termination (CAVEAT).

Ross was elected to the Ontario legislature in the 1995 provincial election, defeating incumbent New Democrat Richard Allen by over 4,000 votes in the riding of Hamilton West. This was generally regarded as an upset, as the Tories had not won the riding since 1971. Ross served as a backbench supporter of Mike Harris's government for the next four years.

In the 1999 provincial election, Ross lost to NDP Member of Provincial Parliament (MPP) David Christopherson by over 3,000 votes, after Christopherson's old riding of Hamilton Centre was eliminated by redistribution. Ross has not sought a political comeback since this time.

Lillian Ross (born June 8, 1927) is an American journalist and author who has been a staff writer at The New Yorker since 1949. She was born in Syracuse, New York, the daughter of Louis and Edna (Rosenson) Ross. With the exception of her memoir Here but Not Here, about her relationship with William Shawn, she has been extremely reticent to make the details of her life public. In her writing she makes the narrator (herself) as invisible as she can.