Need to Know is an American public television news program produced by WNET, and broadcast weekly on all Public Broadcasting Service (PBS) affiliate-stations in the United States. It aired from May 2010 until June 2013.

PBS stated that the show was intended to fill the public-affairs and "hard"/investigative news void left by both the one-hour Bill Moyers Journal, and the cancelled, half-hour NOW on PBS. Both departing shows had been long-running, highly rated, and critically acclaimed for their journalistic quality, and focus on issues that deeply impacted regular Americans' lives, yet went largely ignored by commercial TV news outlets. "NTK" branded itself the "TV and Web newsmagazine [that] gives you what you need to know." PBS had described the show as “a multi-platform current affairs news magazine, uniting broadcast and web in an innovative approach to news-gathering and reporting."