| | Last | Honor | First | Middle | Nationality | Occupation | Born | Died | BC | Sex | RealName | #Pix |
| | Ono | Yoko | Japanese | wife | 02/18/1933 | F | 1 |
| | Oppenheimer | J. | Robert | US | science | 04/22/1904 | 02/18/1967 | M | 1 |
| | Orben | Robert | US | comic writer | 03/04/1927 | M |
| | Orbison | Roy | US | music singer | 04/23/1936 | 12/06/1988 | M | 1 |
| | Ordover | Al | M |
| | O'Rourke | P. | J. | US | writer | 11/14/1947 | M | 1 |
| | Orton | Joe | English | writer | 01/01/1903 | 08/09/1967 | M | 1 |
| | Orwell | George | English | writer | 06/25/1903 | 01/21/1950 | M | 1 |
| | Osborne | John | English | playwright | 12/12/1929 | 12/24/1994 | M |
| | Osbourne | Kelly | English | daughter of | 10/27/1984 | F | 1 |
| | Osbourne | Ozzy | English | singer | 12/03/1948 | M | 1 |
| | Osgood | Charles | US | telejournalist | 01/08/1933 | M |
| | Osler | Sir | William | Canadian | physician | 07/11/1849 | 12/29/1919 | M | 1 |
| | Osment | Haley | Joel | US | actor | 04/10/1988 | M | 1 |
| | Osmond | Donny | US | singer | 12/09/1957 | M | 1 |
| | Osmond | Marie | US | singer | 10/13/1959 | F | 1 |
| | Osnato | Rosemary | F |
| | Ostler | Scott | US | sportswriter | M |
| | O'Sullivan | Maureen | ("Jane") | Irish | actor | 05/17/1911 | 06/23/1998 | F | 2 |
| | O'Tolstoy | Lee | M |
| | Otway | Thomas | English | writer | 03/03/1652 | 04/14/1685 | M | 1 |
| | Overbury | Sir | Thomas | English | writer | 06/18/1581 | 09/15/1613 | M |
| | Ovid | Italian | writer | 03/20/1943 | BC | M |
| | Owen | Richard | English | zoologist | 07/20/1804 | 12/18/1892 | M |
| | Owen | Wilfred | English | soldier, writer | 03/18/1893 | 11/04/1918 | M | 1 |
| | Owens | Buck | US | musician | 08/12/1929 | 03/25/2006 | M | Alvis Edgar Owens | 1 |
| | Owens | Jesse | US | athlete | 09/12/1913 | 03/28/1980 | M | James Cleveland Owens | 1 |
| | Owens | Terrell | US | football player | 12/07/1973 | M | 1 |
| | Ozark | Danny | US | Phillies' manager | M |
| | Friday, September 28, 2007 | Page 2 of 2 |