A list of boys tennis regional schedules for the 2021 season.
Class 5A
Region 1
- Date: Oct. 6
- Site: Loveland
- Site contact: Dave Walck
- Schools: Fossil Ridge, Rangeview, ThunderRidge, Doherty, Legacy
Region 2
- Date: Oct. 6-7
- Site: Cherry Creek
- Site contact: Jason Wilkins
- Schools: Cherry Creek, Legend, Ralston Valley, Northglenn, Broomfield, Mountain Range
Region 3
- Date: Oct. 6-7
- Site: CAC Monaco
- Site contact: Kelly Doherty
- Schools: Regis Jesuit, Fort Collins, Rampart, Douglas County, Fountain-Fort Carson
Region 4
- Date: Oct. 6-7
- Site: Fairview/South Boulder Rec Center
- Site contact: Rod Beauchamp
- Schools: Fairview, Arapahoe, Castle View, Arvada West, Highlands Ranch, Loveland
Region 5
- Date: Oct. 6-7
- Site: Apex Tennis Center
- Site contact: Mike Hughes
- Schools: Lakewood, Chatfield, Monarch, Liberty, Smoky Hill, Horizon
Region 6
- Date: Oct. 6
- Site: Valor Christian/Highlands Ranch
- Site contact: Brian Bonn
- Schools: Valor Christian, Mountain Vista, Pine Creek, Eaglecrest, Cherokee Trail, Poudre
Region 7
- Date: Oct. 7-8
- Site: Colorado Mesa
- Site contact: Paul Cain
- Schools: Fruita Monument, Heritage, Boulder, Columbine, Overland
Region 8
- Date: Oct. 6-7
- Site: Denver Tennis Park
- Site contact: Dackri Davis
- Schools: Denver East, Rock Canyon, Grandview, Rocky Mountain, Hinkley, Chaparral
Class 4A
Region 1
- Date: Oct. 6-7
- Site: Colorado Academy
- Site contact: Jon Hill
- Schools: Colorado Academy, Arvada, Bear Creek, Dakota Ridge, Denver South, D’Evelyn, Lewis-Palmer, Golden, Wheat Ridge
Region 2
- Date: Oct. 7-8
- Site: Kent Denver/Thomas Jefferson
- Site contact: Richard Judd
- Schools: Kent Denver, Alameda, Denver North, Green Mountain, Thomas Jefferson, Palmer Ridge, Ponderosa
Region 3
- Date: Oct. 6-7
- Site: Mullen High School/Pinehurst Country Club
- Site contact: Hank Hooper
- Schools: Mullen, Conifer, Discovery Canyon, Evergreen, George Washington, Littleton, Northfield
Region 4
- Date: Oct. 6-7
- Site: Centennial Courts
- Site contact: Sean Scribbick
- Schools: Greeley Central, Dawson, Greeley West, Mountain View, Northridge, Riverdale Ridge, Severance, Thompson Valley, University, Windsor
Region 5
- Date: Oct. 6-7
- Site: Niwot
- Site contact: Joe Brown
- Schools: Niwot, Centaurus, Erie, Frederick, Longmont, Peak to Peak, Prospect Ridge, Silver Creek, Skyline, Standley Lake
Region 6
- Date: Oct. 7-8
- Site: Cheyenne Mountain
- Site contact: Kris Roberts
- Schools: Cheyenne Mountain, Air Academy, Colorado Springs School, Coronado, Mitchell, Palmer, Sand Creek, Vanguard, Widefield
Region 7
- Date: Oct. 8-9
- Site: Pueblo City Park
- Site contact: Dennis Downs
- Schools: Pueblo County, Canon City, Fountain Valley, Mesa Ridge, Pueblo Centennial, Pueblo Central, Pueblo East, Pueblo South, Pueblo West
Region 8
- Date: Oct. 7-8
- Site: Colorado Mesa
- Site contact: Paul Cain
- Schools: Grand Junction, Aspen, Basalt, Durango, Grand Junction Central, Steamboat Springs, Vail Christian