Miller Comprehensive Catholic High School is a Catholic high school located in the Core Group neighbourhood in the central area of Regina, Saskatchewan, Canada. It was the first high school built by the Regina Catholic school system. It is named after Joseph P. Miller who was a longtime member of the school board.

Miller offers several academic and extracurricular opportunities to its students, including an Advanced Placement (AP) program, a regular program, as well as a modified alternative academic program. The Advanced Placement (AP) program allows high school students to enroll in college-level courses and exams, designed to be equivalent to typical first-year university classes. The AP courses offered at Miller are: Calculus, English, Computer Science, Psychology and Studio Art. A number of specialized courses, including automotive, baking, commercial cooking, construction, cosmetology and welding are also available.

Its feeder elementary schools include Jean Vanier School, St. Augustine Community School, St. Catherine Community School, St. Dominic Savio School, St. Gabriel School, St. Marguerite Bourgeoys School, St. Theresa School, and École St. Elizabeth School.

Miller offers the following clubs and activities:

• AV Tech
• Automotive Club
• Beading Club
• Book Club
• Chess Club
• Cooking Club
• Crochet Club
• Drumming Group
• Musical
• One Acts
• Outdoor Ed
• Improv
• Knitting Club
• Robotics Club
• SADD (Students Against Distracted Driving)
• Liturgical Team
• Maker Space Club
• Multicultural Club
• Revelation (Liturgical Music Group)
• Student Representative Council
• Unity in Diversity
• We All Matter (WAM)
• Yearbook

Miller Comprehensive High School hosts the following sports teams:

• Badminton
• Basketball
• Broomball
• Cross country
• Curling
• Football
• Fencing
• Golf
• Hockey
• Pickleball
• Ping pong
• Rugby union
• Soccer
• Tennis
• Track and field
• Volleyball
• Water polo
• Wrestling

• John Donnelly, bassist and vocalist of the Queen City Kids
• Christine Tell, politician
• Denise Batters, politician, Senator
• Josh Harding, NHL goaltender for the Minnesota Wild
• David Plummer, software engineer on MS-DOS and Microsoft Windows, author of Task Manager in Windows, Space Cadet pinball Windows NT port, etc.
• Brett Wade, CFL Defensive Tackle for the Hamilton Tiger-Cats

• Al Ritchie
• Arcola East - North
• Arcola East - South
• Boothill
• Cathedral
• Core Group
• Gladmer Park
• Glencairn
• Glenelm
• Parkridge

• Miller Comprehensive High School