On Campus
- Alpha Epsilon Delta
- Alpha Lambda Delta
- Alpha Phi Omega
- American Chemical Society
- Amnesty International
- Best Buddies
- Concert Choir
- Cornerstone Collegiate Ministry
- Millikin Dance Team
- Fall Family Weekend Committee
- FAM
- Junior Panhellenic
- Homecoming Committee
- Intramurals
- MEISA
- Millikin Decatur Symphony Orchestra
- Millikin Track Team
- Millikin Softball
- Millikin Swim Team
- Millistat
- MMA
- Model UN
- MUCC
- Order of Omega
- Panhellenic Cabinet
- Panhellenic Council
- Physical Graffiti
- Pi Kappa Lambda
- Sigma Alpha Iota
- Sigma Alpha Omega
- SHRM
- Sigma Zeta
- University Center Board (UCB)