Waco ( ) is a city in and the county seat of McLennan County, Texas. The city has a 2005 estimated total population of 120,465 . It is the 26th largest city by population in Texas, and 195th in the US. The Waco MSA consists of McLennan County and has a population of 226,189. It is served by Waco Regional Airport.

The city is the fly-in point for George W. Bush for his visits to his Prairie Chapel Ranch in Crawford and support personnel and reporters stay in the city's hotels. It is the home of Baylor University. The Dr. Pepper soft drink (originally referred to as "Waco") was established there.

The city's name is also applied to a high-profile 1993 siege, despite it having taken place outside the city limits.