- January 1, 1966 (This strip is adapted in Happy New Year, Charlie Brown!)
- January 2, 1966 (This strip is adapted in the episode "The Winter Games" from the 2014 French TV series Peanuts)
- January 3, 1966
- January 4, 1966
- January 5, 1966
- January 6, 1966 (Part of a series of strips that were later reprinted in the booklet Security is an Eye Patch, published by the U.S. Department of Health, Education and Welfare in 1968)
- January 7, 1966
- January 8, 1966
- January 9, 1966 (The first time that Snoopy's doghouse, or the World War I Flying Ace's Sopwith Camel, appears covered in bullet holes This strip is adapted in It's the Great Pumpkin, Charlie Brown)
- January 10, 1966
- January 11, 1966
- January 12, 1966
- January 13, 1966
- January 14, 1966
- January 15, 1966
- January 16, 1966 (This strip was adapted in You're a Good Man, Charlie Brown)
- January 17, 1966
- January 18, 1966
- January 19, 1966
- January 20, 1966
- January 21, 1966 (This strip was adapted in A Boy Named Charlie Brown (documentary))
- January 22, 1966
- January 23, 1966 (The first time that Snoopy the World War I Flying Ace says, "Curse you, Red Baron!")
- January 24, 1966
- January 25, 1966
- January 26, 1966
- January 27, 1966
- January 28, 1966
- January 29, 1966
- January 30, 1966
- January 31, 1966
← December 1965 | February 1966 → |
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