Western lynx spider 
Western Spotted Orbweaver 
Wetland Giant Wolf Spider 
Wheel spider 
White crab spider 
White Micrathena 
White Porch Spider 
White-banded Crab Spider 
White-Banded Fishing Spider 
White-banded House Jumping Spider 
White-banded House Jumping Spider 
White-jawed Jumping Spider 
White-spotted sandalodes 
White-spotted Swift Spider 
White-striped Ocrisiona 
White-striped Running Crab Spider 
White-winged Araneus 
Whitman's Jumping Spider 
Wide Jawed Jumping Spider 
Wide Ribbon Meshweaver 
Woodlouse spider 
Wrap-around spider 
Wulfila saltabundus 
Xysticus acerbus