- January 1, 1971
- January 2, 1971
- January 3, 1971
- January 4, 1971
- January 5, 1971
- January 6, 1971
- January 7, 1971
- January 8, 1971
- January 9, 1971
- January 10, 1971
- January 11, 1971 (This strip is adapted in the 1976 documentary, Happy Anniversary, Charlie Brown)
- January 12, 1971 (This strip was adapted as a bumper for the 2014 French TV series Peanuts)
- January 13, 1971
- January 14, 1971
- January 15, 1971
- January 16, 1971
- January 17, 1971
- January 18, 1971
- January 19, 1971
- January 20, 1971
- January 21, 1971
- January 22, 1971
- January 23, 1971
- January 24, 1971
- January 25, 1971
- January 26, 1971
- January 27, 1971
- January 28, 1971 (This strip is adapted in the 1976 documentary, Happy Anniversary, Charlie Brown)
- January 29, 1971
- January 30, 1971
- January 31, 1971 (This strip is adapted in Snoopy!!! The Musical)
| ← December 1970 | February 1971 → |