- January 1, 1977
- January 2, 1977
- January 3, 1977
- January 4, 1977
- January 5, 1977
- January 6, 1977
- January 7, 1977
- January 8, 1977
- January 9, 1977 (Start of a series of three Sunday strips in which Snoopy repeats his Cheshire Beagle trick, not seen since April 22, 1967)
- January 10, 1977
- January 11, 1977
- January 12, 1977
- January 13, 1977
- January 14, 1977
- January 15, 1977
- January 16, 1977
- January 17, 1977 (Beginning of a storyline which was later adapted in A Charlie Brown Celebration)
- January 18, 1977
- January 19, 1977
- January 20, 1977
- January 21, 1977 (Truffles, not seen since April 15, 1975 returns)
- January 22, 1977
- January 23, 1977
- January 24, 1977
- January 25, 1977
- January 26, 1977
- January 27, 1977 (Sally calls Linus "her Sweet Babboo" for the first time)
- January 28, 1977
- January 29, 1977 (The final appearance of Truffles)
- January 30, 1977
- January 31, 1977
← December 1976 | February 1977 → |