- July 1, 1990 (This strip is adapted for the end credits of The Peanuts Movie)
- July 2, 1990 (This strip and the following three strips are adapted in the episode "My Blanket!" from the 2014 French TV series Peanuts)
- July 3, 1990
- July 4, 1990
- July 5, 1990
- July 6, 1990
- July 7, 1990
- July 8, 1990
- July 9, 1990
- July 10, 1990
- July 11, 1990 (This strip is used on the page for May 27 of the Dayspring Peanuts: A Year's Worth of Smiles and Blessings Desk Calendar)
- July 12, 1990
- July 13, 1990
- July 14, 1990 (This strip is adapted for the end credits of The Peanuts Movie)
- July 15, 1990
- July 16, 1990
- July 17, 1990
- July 18, 1990
- July 19, 1990
- July 20, 1990
- July 21, 1990
- July 22, 1990
- July 23, 1990 (The first appearance of Peggy Jean)
- July 24, 1990
- July 25, 1990
- July 26, 1990
- July 27, 1990
- July 28, 1990
- July 29, 1990 (This strip is adapted in the episode "Off Key" from the 2014 French TV series Peanuts)
- July 30, 1990
- July 31, 1990 (Start of a series of strips that make up the football gag for 1990)
| ← June 1990 | August 1990 → |