Stephen Thomas is an American author, builder and television personality. He was the host of the PBS home renovation series This Old House from 1989 to 2003 and of Renovation Nation, on Discovery's former Planet Green channel, for two seasons (2008–2010) until its cancellation.

This Old House is an American home improvement media brand with television shows, a magazine, and a website. The brand is headquartered in Stamford, Connecticut. The television series airs on the Public Broadcasting Service (PBS) television network and follows remodeling projects of houses over a series of weekly episodes.