Windsor
Windy
Winfield
Wing Nut
Wings
Wingy
Wink
Winken
Winkie
Winkle
Winkler
Winklynymph
Winkster
Winky
Winnetoe
Winnie
Winnie Pooh
Winnie The Pooh
Winny
Wino (official mascot of a Napa Valley winery)
Winsdor
Winsdor Ketsl
Winslow
Winsome
Winston
Winston Churchcat
Winston O Boogie
Winter
Wintermute (named after William Gibson's AI in "Neuromancer")
Winthrop