Sam Houston State University (Sam Houston, SHSU or Sam) is a public research university in Huntsville, Texas, United States. Founded in 1879, it is the third-oldest public college or university in Texas. It is one of the first normal schools west of the Mississippi River and the first in Texas. The school is named for statesman Sam Houston, who made his home in the city and is buried there.

SHSU is a member of the Texas State University System and has an enrollment of more than 20,000 students across over 80 undergraduate, 59 master's, and 10 doctoral degree programs. It also offers more than 20 online bachelor's and graduate degrees. It is classified among "R2: Doctoral Universities – High research activity."