| Movie | 1959 | Some Like It Hot | Jerry (Daphne) | |
| Movie | 1960 | The Apartment | C.C. Baxter | |
| Movie | 1988 | Gregory Peck: His Own Man | Self | |
| Movie | 1979 | The China Syndrome | Jack Godell | |
| Movie | 1974 | The Front Page | Hildebrand Johnson | |
| Movie | 1986 | Debonair Dancers | Narrator | |
| Movie | 1993 | Short Cuts | Paul Finnigan | |
| Movie | 1964 | Good Neighbor Sam | Sam Bissel | |
| Movie | 1991 | JFK | Jack Martin | |
| Movie | 1996 | Hamlet | Marcellus | |
| Movie | 1966 | The Fortune Cookie | Harry Hinkle | |
| Movie | 1958 | Bell, Book and Candle | Nicky Holroyd | |
| Movie | 2008 | Inside 'The Apartment' | Self (archive footage) | |
| Movie | 2007 | Magic Time: The Art of Jack Lemmon | Self (archive footage) | |
| Movie | 2002 | Magic Time: A Tribute to Jack Lemmon | Self (archive footage) | |
| Movie | 1963 | Irma la Douce | Nestor Patou | |
| Movie | 1992 | The Player | Jack Lemmon | |
| Movie | 2004 | The China Syndrome: A Fusion of Talent | Self (archive footage) | |
| Movie | 2004 | The China Syndrome: Creating a Controversy | Self (archive footage) | |
| Movie | 1954 | It Should Happen to You | Pete Sheppard | |
| Movie | 1970 | The Out-of-Towners | George Kellerman | |
| Movie | 1989 | Dad | Jake Tremont | |
| Movie | 1968 | The Odd Couple | Felix Ungar | |
| Movie | 1993 | Grumpy Old Men | John Gustafson | |
| Movie | 1965 | The Great Race | Professor Fate | |
| Movie | 1977 | Airport '77 | Don Gallagher | |
| Movie | 1997 | 12 Angry Men | Juror 8 | |
| Movie | 1963 | Days of Wine and Roses | Joe Clay | |
| Movie | 1996 | Getting Away with Murder | Mueller / Luger | |
| Movie | 1992 | Glengarry Glen Ross | Shelley Levene | |
| Movie | 1998 | The Odd Couple II | Felix Ungar | |
| Movie | 1965 | How to Murder Your Wife | Stanley Ford | |
| Movie | 1999 | Tuesdays with Morrie | Morrie Schwartz | |
| Movie | 1959 | It Happened to Jane | George Denham | |
| Movie | 1981 | Buddy Buddy | Victor Clooney | |
| Movie | 1985 | Macaroni | Robert Traven | |
| Movie | 1957 | Operation Mad Ball | Pvt. Hogan | |
| Movie | 1955 | My Sister Eileen | Bob Baker | |
| Movie | 1995 | Grumpier Old Men | John Gustafson | |
| Movie | 1982 | Missing | Ed Horman | |
| Movie | 1963 | Under the Yum-Yum Tree | Hogan | |
| Movie | 1960 | The Wackiest Ship in the Army | Rip Crandall | |
| Movie | 1955 | Mister Roberts | Ensign Frank Pulver | |
| Movie | 1973 | Save the Tiger | Harry Stoner | |
| Movie | 1996 | The Grass Harp | Dr. Morris Ritz | |
| Movie | 1958 | Cowboy | Frank Harris | |
| Movie | 1997 | Out to Sea | Herb Sullivan | |
| Movie | 1996 | My Fellow Americans | President Russell P. Kramer | |
| Movie | 1962 | The Notorious Landlady | Bill Gridley | |
| Movie | 1954 | Phffft | Robert Tracey | |
| Movie | 1975 | The Prisoner of Second Avenue | Mel Edison | |
| Movie | 1990 | The Life and Legend of Jane Goodall | Self - Narrator (voice) | |
| Movie | 1986 | That's Life! | Harvey Fairchild | |
| Movie | 1960 | Pepe | Jack Lemmon | |
| Movie | 1969 | The April Fools | Howard Brubaker | |
| Movie | 1957 | Fire Down Below | Tony | |
| Movie | 1992 | For Richer, for Poorer | Aram Katourian | |
| Movie | 1956 | You Can't Run Away from It | Peter Warne | |
| Movie | 2000 | On Cukor | Self | |
| Movie | 1999 | Inherit the Wind | Henry Drummond | |
| Movie | 1984 | Mass Appeal | Father Tim Farley | |
| Movie | 1982 | Hollywood: The Gift of Laughter | Self | |
| Movie | 1988 | Happy Birthday, Bob: 50 Stars Salute Your 50 Years with NBC | Self (archive footage) | |
| Movie | 1998 | The Long Way Home | Tom Gerrin | |
| Movie | 1982 | Portrait of a '60% Perfect Man': Billy Wilder | Self | |
| Movie | 1980 | Tribute | Scottie Templeton | |
| Movie | 1976 | Alex & the Gypsy | Alexander Main | |
| Movie | 1976 | The Gentleman Tramp | Narrator | |
| Movie | 1967 | Luv | Harry Berlin | |
| Movie | 1972 | The War Between Men and Women | Peter Wilson | |
| Movie | 1986 | Marilyn Monroe: Beyond the Legend | Self (from Some Like It Hot [1959]) (archive footage) | |
| Movie | 1987 | Long Day's Journey Into Night | James Tyrone | |
| Movie | 2006 | The Legacy of 'Some Like It Hot' | Self (archive footage) | |
| Movie | 2006 | The Making of 'Some Like It Hot' | Self (archive footage) | |
| Movie | 1976 | The Entertainer | Archie Rice | |
| Movie | 1998 | Off the Menu: The Last Days of Chasen's | Self | |
| Movie | 2004 | Uta Hagen's Acting Class | Self | |
| Movie | 1962 | The New March of Dimes Presents: The Scene Stealers | Self | |
| Movie | 1996 | A Weekend in the Country | Bud Bailey | |
| Movie | 1955 | Three for the Show | Martin 'Marty' Stewart | |
| Movie | 2000 | Klaus Kinski: I'm not an actor | Self (archive footage) | |
| Movie | 1990 | The American Film Institute Presents: TV or Not TV? | Self - Host | |
| Movie | 2018 | Always at The Carlyle | Self (archive footage) | |
| Movie | 2005 | Nos Bastidores de Hollywood | Self | |
| Movie | 2008 | Starz Inside: Ladies or Gentlemen | Self (archive footage) | |
| Movie | 1996 | Fred MacMurray: The Guy Next Door | Self | |
| Movie | 1971 | Kotch | Sleeping Bus Passenger (uncredited) | |
| Movie | 1993 | A Life in the Theatre | Robert | |
| Movie | 2003 | Christmas in Hollywood | Self (archive footage) | |
| Movie | 1998 | Puppies for Sale | | |
| Movie | 1992 | James Cagney: Top of the World | Self | |
| Movie | 1986 | Kraft Salutes the George Burns 90th Birthday Special | Self | |
| Movie | 1949 | The Lady Takes a Sailor | Plasterer (uncredited) | |
| Movie | 1990 | The Earth Day Special | Coach Stewart | |
| Movie | 1990 | Rita Hayworth: Dancing Into the Dream | Self | |
| Movie | 1998 | Billy Wilder: The Human Comedy | Self | |
| Movie | 2000 | The Legend of Bagger Vance | Narrator | |
| Movie | 1989 | Harold Lloyd: The Third Genius | Self | |
| Movie | 1975 | Killer Cop | Narrator (voice) | |
| Movie | 1999 | Forever Hollywood | Self | |
| Movie | 1996 | Jack Lemmon: America's Everyman | Self | |
| Movie | 2014 | And the Oscar Goes To... | Self (archive footage) | |
| Movie | 1950 | Once Too Often | Mike (uncredited) | |
| Movie | 1991 | The One, the Only... Groucho | Self | |
| Movie | 1992 | Earth and the American Dream | Reader (voice) | |
| Movie | 1972 | Avanti! | Wendell Armbruster, Jr. | |
| Movie | 1974 | Wednesday | Jerry Murphy | |
| Movie | 2001 | Nobody's Perfect - The Making of Some Like It Hot | Self | |
| Movie | 1993 | Luck, Trust & Ketchup: Robert Altman in Carver Country | Self | |
| Movie | 1996 | Shirley Maclaine: Kicking Up Her Heels | Self | |
| Movie | 1997 | Walter Matthau: Diamond in the Rough | Self | |
| Movie | 1981 | All-Star Party for Burt Reynolds | Self | |
| Movie | 1995 | Inside the Dream Factory | Self | |
| Movie | 1981 | Musical Comedy Tonight II | Self | |
| Movie | 1972 | S Wonderful, 'S Marvelous, 'S Gershwin | Self - Host | |
| Movie | 1993 | Beyond JFK: The Question of Conspiracy | Self | |
| Movie | 2009 | Johnny Mercer: The Dream's on Me | Self | |
| Movie | 1998 | Private Screenings: Jack Lemmon and Walter Matthau | Self | |
| Movie | 1985 | Jacques Cousteau: The First 75 Years | Self | |
| Movie | 1982 | Night of 100 Stars | Self | |
| Movie | 1968 | Jack Benny's Bag | Self | |
| Movie | 2017 | John G. Avildsen: King of the Underdogs | Self (voice) (archive footage) | |
| Movie | 2000 | Altman on His Own Terms | Self | |
| Movie | 1987 | The Best of Max Headroom | Self | |
| Movie | 2021 | The Real Charlie Chaplin | | |
| TV Show | 1994 | Inside the Actors Studio | Self | 1 |
| TV Show | 1989 | The Simpsons | Frank Ormand (voice) | 1 |
| TV Show | 2003 | Un film et son époque | Self (archive footage) | 1 |
| TV Show | 1948 | Studio One | Fred Stevens | 1 |
| TV Show | 1968 | Rowan & Martin's Laugh-In | Self | 2 |
| TV Show | 1950 | Lux Video Theatre | Alfred Fishkettle | 1 |
| TV Show | 1948 | The Philco Television Playhouse | | 1 |
| TV Show | 1956 | The Dinah Shore Chevy Show | Self | 1 |
| TV Show | 1949 | Suspense | | 1 |
| TV Show | 1950 | Robert Montgomery Presents | | 2 |
| TV Show | 1956 | Dick Powell's Zane Grey Theatre | Cass Kendall | 1 |
| TV Show | 1973 | The American Film Institute Salute to ... | Self | 4 |
| TV Show | 1956 | The Steve Allen Show | Self - Pianist | 1 |
| TV Show | 1977 | The Hollywood Greats | Self | 1 |
| TV Show | 1953 | The Oscars | Self | 10 |
| TV Show | 1978 | The Kennedy Center Honors | Self | 1 |
| TV Show | 1952 | Heaven for Betsy | Peter Bell | 25 |
| TV Show | 1957 | Alcoa Theatre | Ashley | 1 |
| TV Show | 1962 | The Tonight Show Starring Johnny Carson | Self | 8 |
| TV Show | 1961 | The Mike Douglas Show | Self | 2 |
| TV Show | 1948 | The Ed Sullivan Show | Self | 4 |
| TV Show | 1988 | The Murder of Mary Phagan | Gov. John Slaton | 2 |
| TV Show | 1974 | Flick Flack | | 1 |
| TV Show | 1971 | V.I.P. Schaukel | Self | 1 |
| TV Show | 1948 | Studio One | Charlie Bemis | 1 |
| TV Show | 1997 | Scene by Scene | Self | 1 |
| TV Show | 1971 | Great Performances | Self | 1 |
| TV Show | 1956 | Tony Awards | Self - Host | 1 |
| TV Show | 1956 | Tony Awards | Self - Presenter | 1 |
| TV Show | 1975 | Les Rendez-vous du dimanche | Self | 1 |
| TV Show | 1957 | Tonight Starring Jack Paar | Self | 1 |
| TV Show | 1968 | The Dick Cavett Show | Self - Guest | 2 |
| TV Show | 1950 | What's My Line? | Self - Panelist | 4 |
| TV Show | 1950 | What's My Line? | Self - Mystery Guest | 4 |
| TV Show | 1985 | The Max Headroom Show | Self | 1 |
| TV Show | 1988 | The Smothers Brothers Comedy Hour | | 1 |
