Calpella may refer to:

• Calpella, California
• Calpella mobile platform, a platform based on Intel Nehalem microarchitecture.
• A brachiopod genus, see Calpella (brachiopod).

• William Wright (politician)
• William Wright Smith
• William Wrigley Company
• William Wrigley, Jr
• William Wrigley, Jr., Winter Cottage
• William Wriothesley
• William W. Robertson
• William W. Robinson
• William W. Rockhill
• William Wroth
• William W Schwarzer
• William W. Schwarzer
• William W. Sellers
• William W. Smith
• William W. Stephens
• William W. Taft
• William W. Tait
• William w tait
• William Wurtenburg
• William W. Van Ness House
• William W. Wheaton
• William W. Wilkins
• William W. Wilkins, Jr.
• William W. Wilson
• William W. Wilson (disambiguation)