- Wallcreeper
- Warbling White-eye
- Water Pipit
- Water Rail
- Water Thick-knee
- Waved Albatross
- Western Barn Owl
- Western Capercaillie
- Western Cattle Egret
- Western House Martin
- Western Jackdaw
- Western Marsh Harrier
- Western Rock Nuthatch
- Western Subalpine Warbler
- Western Swamphen
- Western Yellow Wagtail
- Whinchat
- Whiskered Tern
- White-backed Mousebird
- White-bellied Antpitta
- White-bellied Erpornis
- White-breasted Waterhen
- White-capped Redstart
- White-cheeked Pintail
- White-cheeked Starling
- White-crested Helmetshrike
- White-crested Laughingthrush
- White-crowned Lapwing
- White-crowned Wheatear
- White-eared Sibia
- White-faced Storm Petrel
- White-faced Whistling Duck
- White-fronted Bee-eater
- White-naped Crane
- White-tailed Eagle
- White-tailed Tropicbird
- White-throated Dipper
- White-throated Kingfisher
- White-throated Sparrow
- White-winged Scoter
- White-winged Snowfinch
- White-winged Tern
- White's Thrush
- White Stork
- White Tern
- White Wagtail
- White Wagtail (lugens)
- Whooper Swan
- Willow Tit
- Willow Warbler
- Wilson's Storm Petrel
- Wire-tailed Swallow
- Wood Duck
- Wood Sandpiper
- Wood Warbler
- Woodchat Shrike