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- Ivy Student Council
- IEEE-Eta Kappa Nu
- Indian Students' Association
- Interfraternity Council
- Interior Design Student Association
- International Student Council
- Iranian Students' and Scholars' Association
- Investment Group
- Immunobiology Graduate Student Organization
- Industrial Technology Club
- Iowa Bandmasters Association
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- Supply Chain Management Club
- Solar Car
- Student Chapter of the Veterinary Emergency Critical Care Society
- Sigma Lambda Beta International Fraternity Inc.
- Student American Veterinary Medical Association Chapter
- Stewart House (Linden)
- Students Helping Rescue Animals
- Softball Club (Women)
- Swim Club
- Stormettes Dance Line
- SCUBA Diving & Snorkeling Club