Organizers
- Intrigue Dance and Performing Arts Center
- Inventive Ones S.T.E.M. (Science, Technology, Engineering and Mathematics)
- Inverness Club
- Involved Events
- InYou Ministries
- iO Theater
- iO West
- iO West Theater
- Ionad Mara agus Goeltai Acla Teo
- Ionian Village
- Iowa City Boys Baseball
- Iowa City Parks and Recreation Department
- Iowa City Senior Center
- Iowa City/Johnson County Senior Center
- Iowa Football
- Iowa Football Club
- Iowa Multisport
- Iowa State Delta Chi
- Iowa USSSA
- Iowa Weimaraner Rescue
- iPlayTek
- iPrint 3D Studio
- IQ Village Franchise
- Ira Kramer Golf Academy
- iRecreate
- Iredell County Parks and Recreation
- Iredell Health Systems
- Ireland's Dream
- Irelands Toughest Muckers
- Irish Firefighter's Benevolent Association
- IrishFit Ltd
- iRock Fitness Inc
- Iron County Young Survivors
- Iron Diamond Sports, LLC
- Iron Girl Pleasant Prairie
- Iron Monkey Competition
- Iron Pine Lacrosse
- Iron Team Brooklyn
- Iron Temple CrossFit
- IronEdge Racing LLC
- Ironkidz Triathlon
- IRONWILL FOOTBALL
- Ironwood Golf Club
- iRun & Company, LLC
- iRun Productions
- iRun4Charity
- IRunTons, LLC
- Irving Marathon
- Irvington Sports Association
- Irvington Village Improvement Assn
