Billy Ryan High School (Ryan or RHS) is a public high school located in east Denton, Texas. It is the second high school of the Denton Independent School District and classified as a 5A school by the UIL. The original building for the school was built in 1991 and was followed with expansions in 1994, 2006, 2008/2009, and 2022 that added more space for the pre-existing technology and fine arts programs.

Its boundary includes sections of Denton, most of Shady Shores, and a section of Corinth.^[3][4]

Previously the boundary included, in addition to the above:^[5] Lincoln Park, much of Cross Roads, and sections of Little Elm, Oak Point, Paloma Creek, and Savannah.^[6]

Sports played at Ryan include:

• Brian Smith – class of 2002 – former NFL player (Jacksonville Jaguars)^[17]
• Jarvis Moss – class of 2003 – former NFL player (Denver Broncos, Oakland Raiders)^[18]
• Javy Guerra – class of 2004 – Major League Baseball pitcher (Chicago White Sox, Los Angeles Dodgers, Los Angeles Angels, Miami Marlins)^[19]
• Anthony Hill Jr. - class of 2023 - linebacker for the Texas Longhorns^[20]
• Austin Jackson – class of 2005 – MLB outfielder (Seattle Mariners, New York Yankees, Detroit Tigers, Chicago Cubs, Chicago White Sox, Cleveland Indians, Texas Rangers)^[21]
• Kelly Kraft – class of 2007 – professional golfer^[22]
• Mario Edwards Jr. – class of 2012 – NFL player (Seattle Seahawks)^[23]
• Earnest Brown IV – class of 2017 – NFL player (Los Angeles Rams)
• Derek Lokey – class of 2004 – former NFL player (Kansas City Chiefs)
• Bud Sasser – class of 2010 – former NFL player (St. Louis Rams)
• Emani Bailey – class of 2020 – running back for the TCU Horned Frogs^[24]
• Drew Sanders – class of 2020 – NFL player (Denver Broncos)
• Ja'Tavion Sanders - class of 2021 - tight end for the Texas Longhorns^[25]