Grapevines
- I Be Black Girl
- ICNA Relief
- Idaho Women's Charitable Foundation
- Idaho Women's Charitible Fund
- Ignite!
- IGNITE Worldwide
- IKAR Teen Philanthropy Giving Circle
- Impact 100 - Baldwin County
- Impact 100 - Chicago
- Impact 100 Cincinnati
- Impact 100 Crawford County
- Impact100 Essex
- Impact 100 Fremantle
- Impact 100 Garden State
- impact100 Greater Chesapeake
- Impact 100 Greater Indianapolis
- Impact 100 - Greater Milwaukee
- Impact 100 - Greater Peninsula
- Impact 100 Houston
- Impact 100 Jersey Coast
- Impact100 London
- Impact 100 Macomb County
- Impact 100 Melbourne
- Impact100 Metro Denver
- Impact 100 - Metro Detroit
- Impact 100 - New Orleans
- Impact 100 - Northwest FL
- Impact 100 NYC
- Impact 100 NYC nextgen
- Impact 100 - Oakland County MI
- Impact 100 - Owensboro
- Impact 100 Palm Beach County
- IMPACT 100 - Pensacola Bay Area
- Impact 100 Perry County
- Impact100 Philadelphia
- Impact 100 Queensland
- Impact 100 Redwood Circle
- Impact 100 Richmond
- Impact 100 Seattle
- Impact100 Sonoma
- Impact 100 South Australia
- Impact100 South Jersey
- Impact 100 SRQ
- Impact 100 Steamboat Springs
- Impact 100 St. Lucie
- Impact 100 Sydney
- Impact 100 Sydney North
- Impact 100 Tasmania
- Impact 100 - Traverse City
- Impact100 Westchester
- Impact 100 Western Australia
- Impact100 Wichita Falls
- Impact Austin
- Impact Club Boise
- Impact Club - Coeur d'Alene
- Impact Club - Conejo Valley
- Impact Club - Eugene
- Impact Club - Fox Cities
- Impact.Edition
- Impact Fairfield County
- Impact Giving
- Impact Grants Chicago
- Impact Intent
- Impact Investing Giving Circle
- Impact Las Vegas
- Impact - Nashville
- Impact Oklahoma
- Impact - Porter County
- Impact San Antonio
- Impact the Palm Beaches
- Impact the Palm Beaches Next-Gen
- ImPAct The States
- Impact West Seattle
- Impartial, Inc.
- Inactive
- In Celebration of Brandon Cermak
- Indianapolis Businesses for Good
- Indianapolis Guys for Good
- Indianapolis Professional Women for Good
- Indigenous Circle of Giving: A Decolonizing Wealth Project Fund
- Individual
- Indivisible Euclid Giving Circle
- IndivisibleWeStand
- InfUUsion
- Inheritage Society
- In It To Win It
- Inland Empire's Dining for Women
- Inmate Lives Matter Incorporated
- Inner Visions of Cleveland Giving Circle
- Innovation Fund
- In Pursuit of Clean Countertops Giving Circle
- In response to Roe/Down with Dobbs - Giving Circle
- Inspired Women Paying It Forward- BEAVER
- Inspired Women Paying It Forward - Pittsburgh North
- Inspired Women Sewickley
- Inspired Women South
- Inspired Women Westmoreland Fund
- Inspire Giving Fund
- Insturment
- Interfaith Giving Circle
- Intergenerational Giving Circle
- International RESCUE committee (IRC)
- Investing in Native American Communities
- Ireland Young Leaders Programme
- Irvine Guys for Good
- Isabel's Giving Circle
- ISF Giving Circle
- ISJL Fellow Alumni Network
- Israel Giving Circle
- Isr-Pal Giving Circle
- It's the States!
- I Will Aid & Abet Abortion