| Name | Deductibility Code |
| Alliance of Wisconsin Animal Rehoming Efforts Inc. | -- |
| Basset Buddies Rescue Inc. | -- |
| Bay Lane Booster Club | -- |
| Biography Inc. | -- |
| Friends of Mhs Music Makers | -- |
| Friends of Muskego Public Library | -- |
| Greenfield Historical Society Inc. | -- |
| Humane Milwaukee Inc. | -- |
| Junior Viking Volleyball Club | -- |
| Little Muskego Lake Association Inc. | -- |
| Lutheran Missions Attic Workshop Inc. | -- |
| Lutherans Inc. for Elderly | -- |
| Mhs Gridiron Club | -- |
| Milwaukee Bible Church | -- |
| Muskego Athletic Assn | -- |
| Muskego High School Soccer Booster Club Inc. | -- |
| Muskego Historical Society Inc. | -- |
| Muskego Performing Arts Center | -- |
| Muskego Warriors Youth Baseball | -- |
| Muskego Wind Lake Youth Football | -- |
| Muskego Womans Club | -- |
| New Beginning Christian Church Inc. | -- |
| Oak Creek Fast Pitch Fanatics | -- |
| Pevski Zbor Uspeh Corporation | -- |
| Pipeline to Jesus International Inc. | -- |
| Praise Fellowship Inc. | -- |
| Rock River Cancer Research Foundation Inc. | -- |
| Spielmannszug Milwaukee | -- |
| Steeple View Inc. | -- |
| Transformation Ministries Inc. | -- |
| Transformed Life in Christ Ministry Inc. | -- |
| Vietnam Veterans Foundation of Wisconsin Inc. | 6 |
| Waterbugs Ski Club Inc. | -- |
| Waterford Youth Football Booster Club | -- |
| Wisconsin Association of Blind Athletes | -- |
| Wisconsin Illinois Search and Recovery K9 Team Inc. | -- |