Sigma Phi Epsilon
- Nickname: SigEp
- Motto: Building Balanced Men
- Colors: Purple, Red, Gold
- Flower: Violet and Dark Red Rose
- Founded: Nov. 1, 1901, Richmond College
- Founded at CU: Feb. 19, 1904
- Philanthropies: Big Brothers, Big Sisters
- Website: 听
- Local Website:
- Contact Info:
- Chapter President: Connor Perea
- Recruitment Chair:Frank Shahbahrami and Lake Grooters
- Instagram: @sigepcolorado
Sigma Phi Epsilon, or Sig Ep, is a social fraternity that was founded in 1901 and has grown to over 190 chapters. It known for its commitment to building 鈥渂alanced men鈥 through the principles of Virtue Diligence and Brotherly love.