| First Name | John |
| Middle Name | Southworth |
| Last Name | Ritter |
| Full Name at Birth | Jonathan Southworth Ritter |
| Other Names | JohnJohnny |
| Age | 54 (age at death) |
| Date of Birth | September 17, 1948 |
| Birthplace | Burbank, California, USA |
| Date of Death | September 11, 2003 |
| Location of Death | Burbank, California, USA |
| Cause of Death | Aortic Dissection |
| Height | 5' 11" (180 cm) |
| Build | Average |
| Eye Color | Blue |
| Hair Color | Brown - Dark |
| Distinctive Features | The Clumsiness |
| Star Sign | Virgo |
| Religion | Roman Catholic |
| Ethnicity | White |
| Nationality | American |
| High School | Hollywood High School, Hollywood, CA (1966) |
| University | Psychology, University of Southern California (1970) |
| Occupation | Actor, Comedian, Voice-Over Artist, Producer, Soundtrack |
| Occupation Category | Actor |
| Claim to Fame | Threes Company, 8 Simple Rules, Bad Santa, Clifford The Big Red Dog, Sling Blade, Hearts Afire |
| Official Website | imdb.com |
| Father | Tex Ritter |
| Mother | Dorothy Fay |
| Brother(s) | Tom Ritter |
| Other Family Members | Jason Ritter (Son)Carly Ritter (Daughter)Tyler Ritter (Son)Stella Ritter (Daughter) |
| Friends | Billy Bob Thornton, Nancy Morgan, Kaley Cuoco, Katey Sagal, Jenny Sullivan, Paul Linke, Markie Post, Suzanne Somers, Joyce DeWitt, Richard Kline, Don Knotts, Henry Winkler, Amy Davidson, Martin Spanjers, Martin Short, Sarah Michelle Gellar, Audra Lindley, Norman Fell, Priscilla Barnes, Jenilee Harrison, Ann Wedgeworth, Lucille Ball, Tom Hanks, Tom Bergeron |
| Favorite People | Robert RedfordLucille BallWalt DisneyMary Tyler MooreJohn LennonRingo StarrGeorge HarrisonPaul McCartneyDick Van Dyke |
| Favorite TV Shows | Saturday Night LiveThe Mary Tyler Moore ShowThe Dick Van Dyke Show |
| Favorite Bands | The Beatles |
| Favorite Colors | Blue |
| Favorite Accessories | Wrist WatchesColorful ShirtsHawaiian Shirts |
Johnathan Southworth "John" Ritter (September 17, 1948 – September 11, 2003) was an American actor, voice over artist and comedian perhaps best known for playing Jack Tripper and Paul Hennessy in the ABC sitcoms Three's Company and 8 Simple Rules, respectively. Don Knotts called him the "Greatest physical comedian on the planet".
Selected John Ritter film and TV show credits: