| ActerraEIN 23-7064937 | Environment | CA | $1,828,322Small | 90.34 |
| Amazon WatchEIN 95-4604782 | Environment | CA | $1,686,512Small | 82.49 |
| As You SowEIN 94-3169008 | Environment | CA | $3,355,158Small | 93.98 |
| Audubon Canyon RanchEIN 94-6069140 | Environment | CA | $3,214,289Small | 86.74 |
| California Foundation on the Environment and the EconomyEIN 94-2579986 | Environment | CA | $1,638,401Small | 76.58 |
| California Native Plant SocietyEIN 94-6116403 | Environment | CA | $2,326,445Small | 88.85 |
| California State Parks FoundationEIN 94-1707583 | Environment | CA | $8,274,117Mid-sized | 75.25 |
| California TroutEIN 23-7097680 | Environment | CA | $5,896,349Mid-sized | 90.63 |
| Center for Creative Land RecyclingEIN 94-3302410 | Environment | CA | $984,006Small | 89.40 |
| Center for EcoliteracyEIN 94-2911417 | Environment | CA | $2,386,398Small | 88.26 |
| Center for Energy Efficiency and Renewable TechnologiesEIN 68-0260751 | Environment | CA | $2,329,330Small | 81.32 |
| Coalition for Clean AirEIN 23-7120567 | Environment | CA | $1,050,597Small | 85.15 |
| Communities for a Better EnvironmentEIN 94-2998086 | Environment | CA | $2,066,472Small | 83.88 |
| Community Environmental CouncilEIN 94-1728064 | Environment | CA | $1,225,334Small | 87.24 |
| Coral Reef AllianceEIN 94-3211245 | Environment | CA | $3,119,480Small | 92.03 |
| Descanso Gardens Guild, Inc.EIN 95-2511202 | Environment | CA | $8,740,038Mid-sized | 89.78 |
| Earth Island InstituteEIN 94-2889684 | Environment | CA | $9,751,020Mid-sized | 88.24 |
| EarthjusticeEIN 94-1730465 | Environment | CA | $51,564,754Large | 94.85 |
| EarthShare CaliforniaEIN 94-2840364 | Environment | CA | $1,349,632Small | 73.23 |
| Environmental Defense CenterEIN 77-0061994 | Environment | CA | $1,135,564Small | 90.57 |
| Environmental Health CoalitionEIN 95-3798792 | Environment | CA | $3,829,007Mid-sized | 86.60 |
| Friends of the RiverEIN 94-2400210 | Environment | CA | $457,705Small | 80.53 |
| Friends of the Urban ForestEIN 94-2699528 | Environment | CA | $2,523,744Small | 86.32 |
| Global Green USAEIN 77-0387124 | Environment | CA | $2,390,592Small | 82.44 |
| Golden Gate National Parks ConservancyEIN 94-2781708 | Environment | CA | $55,050,170Large | 90.38 |
| Greenbelt AllianceEIN 94-1676747 | Environment | CA | $2,489,805Small | 89.69 |
| Hidden VillaEIN 94-1539836 | Environment | CA | $3,910,117Mid-sized | 97.13 |
| I Love A Clean San Diego CountyEIN 95-2566791 | Environment | CA | $1,383,646Small | 75.88 |
| Interfaith Power & LightEIN 94-3335236 | Environment | CA | $1,481,890Small | 82.03 |
| International RiversEIN 94-3158295 | Environment | CA | $2,122,078Small | 82.97 |
| League to Save Lake TahoeEIN 94-6128680 | Environment | CA | $2,194,842Small | 85.65 |
| Los Angeles WaterkeeperEIN 95-4444787 | Environment | CA | $1,246,299Small | 82.14 |
| Mission BlueEIN 26-1892969 | Environment | CA | $1,261,676Small | 80.39 |
| Nature and Culture InternationalEIN 33-0773524 | Environment | CA | $6,361,508Mid-sized | 93.91 |
| Occidental Arts and Ecology CenterEIN 68-0359676 | Environment | CA | $1,944,634Small | 77.79 |
| Orange County CoastkeeperEIN 33-0847892 | Environment | CA | $1,772,988Small | 94.74 |
| Pacific Crest Trail AssociationEIN 33-0051202 | Environment | CA | $3,359,863Small | 81.60 |
| Pacific EnvironmentEIN 94-2628924 | Environment | CA | $1,330,701Small | 86.58 |
| Rainforest Action NetworkEIN 94-3045180 | Environment | CA | $6,840,501Mid-sized | 89.83 |
| Regional Parks FoundationEIN 23-7011877 | Environment | CA | $1,649,524Small | 90.50 |
| Rose Foundation for Communities and the EnvironmentEIN 94-3179772 | Environment | CA | $7,448,602Mid-sized | 100.00 |
| San Diego Botanic GardenEIN 95-6120581 | Environment | CA | $2,978,807Small | 84.42 |
| San Diego CoastkeeperEIN 33-0647946 | Environment | CA | $668,734Small | 78.81 |
| San Diego River Park FoundationEIN 01-0565671 | Environment | CA | $939,333Small | 85.40 |
| San Francisco BaykeeperEIN 68-0120240 | Environment | CA | $1,512,332Small | 84.75 |
| San Francisco Botanical Garden SocietyEIN 94-6050168 | Environment | CA | $4,261,791Mid-sized | 92.52 |
| San Francisco Parks AllianceEIN 23-7131784 | Environment | CA | $15,142,255Large | 92.48 |
| San Joaquin River Parkway and Conservation TrustEIN 77-0196692 | Environment | CA | $1,749,897Small | 90.56 |
| Santa Barbara Botanic GardenEIN 95-1644628 | Environment | CA | $3,907,707Mid-sized | 90.80 |
| Sierra Club FoundationEIN 94-6069890 | Environment | CA | $72,890,348Large | 95.21 |
| Sierra Nevada AllianceEIN 77-0343881 | Environment | CA | $825,345Small | 79.38 |
| Solar Cookers InternationalEIN 68-0153141 | Environment | CA | $773,030Small | 91.37 |
| Stand.earthEIN 94-3331587 | Environment | CA | $3,081,289Small | 88.89 |
| Sustainable ConservationEIN 94-3232437 | Environment | CA | $5,612,199Mid-sized | 88.59 |
| The Pachamama AllianceEIN 94-3249793 | Environment | CA | $4,472,329Mid-sized | 84.64 |
| TreePeopleEIN 23-7314838 | Environment | CA | $5,561,824Mid-sized | 80.56 |
| Truckee River Watershed CouncilEIN 91-1818748 | Environment | CA | $2,510,386Small | 76.89 |
| Water Education FoundationEIN 94-2419885 | Environment | CA | $1,628,426Small | 86.08 |
| WILDCOASTEIN 77-0536297 | Environment | CA | $2,120,052Small | 92.56 |