Big Ideas is a Canadian television series produced and broadcast by TVOntario, on the air since 2001. The program showcases public intellectual culture. It was conceived by Wodek Szemberg who continues to serve as producer of the program. The show presents public lectures by acclaimed university educators and other distinguished guests. The show is intended for a general audience. The original host, Irshad Manji, was succeeded by Canadian actor/director/playwright Andrew Moodie on 2006-01-07. In September 2011 Piya Chattopadhyay took over as host.

Big Ideas airs on TVOntario on Saturday and Sunday at 5 PM, with repeat airings at 5:00 AM on Sunday and Monday morning.

In 2007, Big Ideas held its Best Lecturer competition for the second time. Dr. Michael Persinger, from Laurentian University, received the best-lecturer award.

Podcasts of the current lectures are available through the Big Ideas website as well as from iTunes.