| "Humor in Prints" from CMA Collections | | September | 13 | 1934 | October | 28 | 1934 |
| Summer Class Exhibition | | September | 19 | 1961 | December | 17 | 1961 |
| A Swedish Exhibit of Museum Techniques | | September | 01 | 1948 | September | 26 | 1948 |
| The Work of Piero Dorazio | Link | September | 14 | 1965 | November | 07 | 1965 |
| Exhibition of the Month: Textures in Art | | September | 30 | 1947 | December | 08 | 1947 |
| Masterworks on Loan, Celebrating the 100th Anniversary of the Cleveland Museum of Art, "Portrait of Helen Sears" by John Singer Sargent | Link | September | 03 | 2016 | November | 01 | 2016 |
| Work No. 965: Half the air in a given space | Link | September | 30 | 2012 | November | 25 | 2012 |
| American Indian, Negro and Primitive Art | | September | 19 | 1934 | November | 04 | 1934 |
| Elizabeth Catlett: Prints and Sculptures | Link | September | 15 | 2002 | January | 05 | 2003 |
| Liz Roberts and Henry Ross: Death Knell | | September | 09 | 2017 | December | 23 | 2017 |
| Small Sculpture in White Soap: Third Annual Competition for the Procter and Gamble Prizes [Children's Museum] | | September | 24 | 1927 | October | 06 | 1927 |
| The Artist in Social Communication: Greeting Cards | | September | 14 | 1948 | September | 26 | 1948 |
| Michelangelo: Mind of the Master | Link | September | 22 | 2019 | January | 05 | 2020 |
| Asian Autumn: Later Korean Art | | September | 22 | 1992 | January | 20 | 1993 |
| The Language of Etching: 1510-1665 | | September | 22 | 1992 | January | 07 | 1993 |
| Object in Focus: Mother and Child Figure from the Congo | | September | 17 | 2002 | November | 24 | 2002 |
| Jerry Birchfield: Stagger When Seeing Visions | | September | 01 | 2017 | December | 23 | 2017 |
| Exhibition of the Month: The Animal and Man | | September | 29 | 1948 | January | 10 | 1949 |
| Gregg Collection of War Posters | | September | 23 | 1917 | November | 2 | 1917 |
| Girl Culture: Photographs by Lauren Greenfield | | September | 28 | 2002 | December | 04 | 2002 |
