- Wallcreeper
- Wandering Tattler
- Wandering Whistling Duck
- Warbling White-eye
- Water Pipit
- Water Rail
- Wedge-tailed Shearwater
- Welcome Swallow
- Western Barn Owl
- Western Black-eared Wheatear
- Western Bluebird
- Western Cattle Egret
- Western Gull
- Western Jackdaw
- Western Marsh Harrier
- Western Meadowlark
- Western Orphean Warbler
- Western Osprey
- Western Reef Heron
- Western Sandpiper
- Western Subalpine Warbler
- Western Yellow Wagtail
- Western Yellow Wagtail (cinereocapilla)
- Western Yellow Wagtail (feldegg)
- Western Yellow Wagtail (flavissima)
- Whinchat
- Whiskered Tern
- Whistling Kite
- White-backed Woodpecker
- White-browed Crake
- White-browed Robin
- White-cheeked Pintail
- White-cheeked Starling
- White-crowned Penduline Tit
- White-crowned Sparrow
- White-faced Heron
- White-naped Crane
- White-necked Heron
- White-plumed Honeyeater
- White-shouldered Starling
- White-spectacled Bulbul
- White-tailed Eagle
- White-tailed Lapwing
- White-throated Dipper
- White-throated Kingfisher
- White-throated Robin
- White-tipped Dove
- White-winged Grosbeak
- White-winged Scoter
- White-winged Snowfinch
- White-winged Tern
- White-winged Triller
- White's Thrush
- White Stork
- White Tern
- White Wagtail
- White Wagtail (lugens)
- White Wagtail (yarrellii)
- Whooper Swan
- Willet
- Willie Wagtail
- Willow Ptarmigan
- Willow Tit
- Willow Warbler
- Wilson's Plover
- Wompoo Fruit Dove
- Wood Sandpiper
- Wood Thrush
- Wood Warbler
- Woodchat Shrike