Lost Dog or Lost Dogs may refer to:

• a lost pet, see Animal loss
• Lost Dog Creek, a steam in South Dakota
• Lost Dogs, a band
• "Lost Dog" (episode), a live-action episode in The Super Mario Bros. Super Show!
• Lost Dogs (album), an album by Pearl Jam
• The Lost Dog, a 2007 novel

• Hawfinch weaver
• Hawgood (disambiguation)
• H. A. & W. Goode
• Haw-Haw Land
• Haw Hill
• H.A. White General Store and House
• Hawick Burghs by-election, 1869
• Hawick Burghs by-election, 1882
• Hawick Burghs by-election, 1886
• Hawick Burghs by-election, 1909
• Hawick Library
• Hawick Target Hill Greyhound Track
• Hawies Fourie
• Hawiii
• Hawija offensive (2017)
• Hawija Offensive (2017)
• Hawijch Elders
• Hawilla
• Hawinella
• H.A. Winston & Co.
• Hawise
• Hawise de la Pole
• Hawise Lestrange
• Hawise of Brittany
• H. A. Wise Wood