Y
- Yachts (1)
- Yellow Avalanche Lily (2)
- Yellow Birch (15)
- Yellow Marsh Marigold (3)
- Yellow Mountain Avens (2)
- Yellow Palo Verde (20)
- Yellow Pond Lily (4)
- Yellowstone National Park (84)
- Yew (11)
- Yosemite Falls (1)
- Yosemite National Park (45)
- Yosemite Valley (6)
- Young, Brigham, 1801-1877 (1)
- Ypsilon Mountain (1)
- Yucca baccata (3)
- Yucca brevifolia (1)
- Yucca glauca (5)
- Yucca mohavensis (1)
- Yucca radiosa (1)
- Yucca whipplei (1)
- Yucca (29)