- Save America's Forests (Organization)1
- Sekyi-Otu, Ato1
- Sickert, Walter, 1860-19421
- Smith, Emily1
- Society of the People Struggling to be Free1
- Stapledon, Olaf, 1886-19501
- Streibel, Barbara1
- Szablowski, Tania1
- TNT1
- Temperate Rainforest Action Coalition (TRAC)1
- Thomas, Alan1
- Thompson, D'Arcy Wentworth, 1860-19481
- Thomson, J. J. (Joseph John), 1856-19401
- Vancouver Island Mapping Project1
- Weiss, Lonnie1
- Western Bands of Shoshoni Indians1
- Wildcat (Organization)1
- Williams, Jonathan, 1929-20081
- Woolf, Virginia, 1882-19411
- Zero Collective1