A boxcar is an enclosed railroad car for carrying general freight.

Boxcar(s) may also refer to:

• Boxcar (band), an Australian synth pop/techno band
• Box Car Racer, a former American punk band
• The Boxcars, an American Bluegrass band
• Boxcar, a 7" vinyl release by Plaid Retina
• "Boxcar", a song by Jawbreaker from 24 Hour Revenge Therapy
• "Boxcar", a song by Neil Young from Chrome Dreams II

• Boxcar (game), alternative name of the dice game Dice 10000
• Boxcars (slang), in dice games, a pair of sixes
• Boxcar averager, an electronic test device
• Boxcar Books, a bookstore in Bloomington, Indiana, U.S.
• Boxcar Comics, a webcomic collective
• The Boxcar Children, a series of children's books
• Boxcar function, a mathematical function
• Fairchild C-119 Flying Boxcar, a U.S. military transport aircraft

• Bockscar, an American aircraft that bombed Nagasaki in 1945
• All pages with titles containing Boxcar