| Name | Deductibility Code |
| Buddhist Practice Inc. | -- |
| Cambridge Center for Behavioral Studies Inc. | -- |
| Coda Intergroup Inc. | -- |
| Flower Eating Dragon Reptile and Environmental Education Iguana | -- |
| Friends of the Littleton Council on Aging Inc. | -- |
| Gander Brook Christian Camp Inc. | -- |
| Global Classroom Inc. | -- |
| Helen G Hauben Foundation Inc. | 4 |
| Henry Vincent Couper Charitable Foundation | 4 |
| Indian Hill Arts Inc. | -- |
| Littleton and Ayer Spectacle Pond Association Inc. | -- |
| Littleton Childrens Fund | -- |
| Littleton Conservation Trust | -- |
| Littleton Country Gardeners | -- |
| Littleton Education Fund | -- |
| Littleton Historical Society | -- |
| Littleton Scholarship Trust | -- |
| Littleton Track Organization | -- |
| Littleton Youth Sports Association Inc. | -- |
| Mill Pond Association Inc. | -- |
| My School Cooperative Nursery Inc. | -- |
| Neighborhood Supper | -- |
| New England Forestry Foundation Inc. | -- |
| Oakmeadow Montessori School Inc. | -- |
| Paralysis Research Organization | 4 |
| Patricia Fund | -- |
| Pc Kids USA Inc. | 4 |
| See A New Sun Foundation Inc. | -- |
| The Middlesex Corporation-Fred Parrella Scholarship Inc. | 4 |
| Windows on Wildlife Inc. | -- |