| CD | Name |
| 1000 | 1000 Friends of Wisconsin Land Use Institute |
| 1199 | 1000 Islands Environmental Center |
| 1002 | 4 H Foundation |
| 3047 | A & K Forestry Consulting |
| 2158.03.01 | A+ After School Programs |
| 3038 | Action Floor System, LLC |
| 2604 | Active Learning |
| 1003 | Adams Friendship Area School District |
| 1212 | Aldo Leopold Foundation |
| 1004 | Aldo Leopold Nature Center, Inc. |
| 3058 | Alliance for Sustainability |
| 3049 | Alliance for the Great Lakes |
| 2343.01 | Alliant Energy: Energy Management Systems |
| 2947 | Alma Area School District |
| 1218 | Almond -Bancroft Schools |
| 1005 | Altoona Schools |
| 2384 | America's Outdoors-Milwaukee |
| 2734 | American Forest & Paper Association (AF&PA) |
| 3054 | American Girl's Fund for Children |
| 1221 | American Lung Association of Wisconsin |
| 1222 | Amery School District |
| 1226 | Antigo School District |
| 1226.03 | Antigo School District: Antigo High School |
| 1006 | Appleton Area School District |
| 1006.01 | Appleton Area School District: East High School |
| 1006.04 | Appleton Area School District: Einstein Middle School |
| 1006.17 | Appleton Area School District: Fox River Academy Environmental Charter School |
| 1006.05 | Appleton Area School District: James Madison Middle School |
| 1006.14 | Appleton Area School District: Jefferson Elementary |
| 1006.03 | Appleton Area School District: North High School |
| 1006.15 | Appleton Area School District: Roosevelt Middle |
| 1007 | Arbor Vitae-Woodruff Schools Joint District |
| 1230.02 | Argyle Land Ethic Academy |
| 1230 | Argyle School District |
| 2663 | Armitage Academy |
| 1008 | Arrowhead Union High School |
| 1235 | Ashland School District |
| 1235.02 | Ashland School District: Marengo Valley Elementary |
| 2392 | Ashland, Bayfield, Douglas, Iron Counties' Land Conservation Department (ABDI) |
| 1009 | Ashwaubenon School District |
| 2170 | Auburndale FFA Alumni Association |
| 1237.02 | Auburndale School District |
| 1237 | Auburndale School District: Auburndale High |
| 2798 | Aue Energy Consulting |
| 1010 | Augusta School District |
| 1239 | Aurora University: George Williams College: Lake Geneva Campus |
| 2610 | B'nai B'rith Beber Company |
| 2658 | B'nai B'rith Henry Monsky Foundation |
| 1242 | Bad River Band of Lake Superior Chippewa Indians |
| 2772 | Bad River Watershed Association |
| | |