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| Title | Year | Status | Character |
|---|
| Wire Service | 1957 | TV Series | Young General |
| Rodan | 1956 | Shigeru (English version, voice, uncredited) |
| Around the World in Eighty Days | 1956 | Old Man at Yokohama Travel Office (uncredited) |
| The Adventures of Dr. Fu Manchu | 1956 | TV Series | Lum Sen |
| TV Reader's Digest | 1956 | TV Series | Mr. Ling |
| Telephone Time | 1956 | TV Series |
| Buffalo Bill, Jr. | 1956 | TV Series |
| Jungle Jim | 1956 | TV Series | Jolong |
| Cavalcade of America | 1954-1956 | TV Series |
| Crossroads | 1956 | TV Series | Wang - Red Soldier / Leang Fan |
| Crusader | 1955 | TV Series | Lin Suchow |
| Gunsmoke | 1955 | TV Series | Chen |
| The Lineup | 1955 | TV Series |
| Love Is a Many-Splendored Thing | 1955 | Lee Foo (uncredited) |
| Godzilla Raids Again | 1955 | Shoichi Tsukioka (English version, voice, uncredited) |
| Soldiers of Fortune | 1955 | TV Series | Captain Kopan |
| Annie Oakley | 1955 | TV Series | Li Wong |
| Big Town | 1955 | TV Series |
| My Little Margie | 1954 | TV Series | Mr. Chang / fake Mr. Lee |
| The Bamboo Prison | 1954 | Comrade-Instructor Li Ching |
| The Ray Milland Show | 1954 | TV Series | Professor Wong |
| December Bride | 1954 | TV Series |
| Fireside Theatre | 1953-1954 | TV Series |
| Studio 57 | 1954 | TV Series | Sam Kee |
| Hell's Half Acre | 1954 | Police Chief Dan |
| World for Ransom | 1954 | Wong |
| The New Adventures of China Smith | 1954 | TV Series | Wong / Tony Wan / Aban |
| South Sea Woman | 1953 | Japanese Deck Officer (uncredited) |
| Fair Wind to Java | 1953 | Pidada |
| Biff Baker, U.S.A. | 1953 | TV Series | Tom Ling |
| Terry and the Pirates | 1952-1953 | TV Series | Police Captain / Lt. Leong / Okura |
| Your Jeweler's Showcase | 1952 | TV Series |
| Chevron Theatre | 1952 | TV Series |
| Schlitz Playhouse | 1952 | TV Series |
| Hong Kong | 1952 | Taxicab Driver (uncredited) |
| The Congregation | 1952 |
| The Stu Erwin Show | 1951 | TV Series | Lin Yang |
| Mysteries of Chinatown | 1950 | TV Series |
| Young Man with a Horn | 1950 | Ramundo the Houseboy (uncredited) |
| Manhandled | 1949 | Chinese Laundry Owner (uncredited) |
| The Sky Dragon | 1949 | Lee Chan |
| The Feathered Serpent | 1948 | Lee Chan |
| Waterfront at Midnight | 1948 | Loy |
| Sleep, My Love | 1948 | Jimmie Lin |
| Dark Delusion | 1947 | Dr. Lee Wong How |
| Lost City of the Jungle | 1946 | Tal Shan |
| Tokyo Rose | 1946 | Charlie Otani |
| How Doooo You Do!!! | 1945 | Chinese Detective |
| First Yank Into Tokyo | 1945 | Haan-Soo |
| Secret Agent X-9 | 1945 | Ah Fong |
| Between Two Women | 1945 | Dr. Lee Wong How aka Dr. Lee |
| 3 Men in White | 1944 | Dr. Lee Wong How |
| Andy Hardy's Blonde Trouble | 1944 | Dr. Lee |
| Salute to the Marines | 1943 | 'Flashy' Logaz |
| Dr. Gillespie's Criminal Case | 1943 | Dr. Lee Wong How |
| The Adventures of Smilin' Jack | 1943 | Capt. Wing |
| Journey for Margaret | 1942 | Japanese Statesman (uncredited) |
| Dr. Gillespie's New Assistant | 1942 | Dr. Lee Wong How |
| Destination Unknown | 1942 | Secretary |
| The Falcon's Brother | 1942 | Jerry - Gay's Houseboy |
| Mexican Spitfire's Elephant | 1942 | Lao Lee - Chinese Magician (uncredited) |
| Across the Pacific | 1942 | Steamship Office Clerk |
| Somewhere I'll Find You | 1942 | Thomas Chang (uncredited) |
| Invisible Agent | 1942 | Surgeon |
| Spy Ship | 1942 | Koshimo Haru |
| Submarine Raider | 1942 | Tesei (uncredited) |
| A Tragedy at Midnight | 1942 | Ah Foo |
| A Yank on the Burma Road | 1942 | Kim How |
| Mr. and Mrs. North | 1942 | Kumi |
| North to the Klondike | 1942 | K. Wellington Wong |
| No Hands on the Clock | 1941 | Severino - Houseboy (uncredited) |
| Burma Convoy | 1941 | Lin Taiyen |
| Let's Go Collegiate | 1941 | Buck Wing |
| Passage from Hong Kong | 1941 | Charlie, Chinese Waiter (uncredited) |
| Bowery Blitzkrieg | 1941 | Clancy (as Key Luke) |
| They Met in Bombay | 1941 | Mr. Toy (scenes deleted) |
| The Gang's All Here | 1941 | George Lee |
| Footlight Fever | 1941 | Chinese Restaurant Waiter (uncredited) |
| The Green Hornet Strikes Again! | 1940 | Kato |
| Comrade X | 1940 | World Press Attendee with Glasses (uncredited) |
| No, No, Nanette | 1940 | Sung, Oriental Cafe Manager (uncredited) |
| Phantom of Chinatown | 1940 | James Lee 'Jimmy' Wong |
| Wildcat Bus | 1940 | Tai (uncredited) |
| The Green Hornet | 1940 | Kato |
| Barricade | 1939 | Ling - Cady's Secretary |
| Sued for Libel | 1939 | Chang Howe |
| Disputed Passage | 1939 | Andrew Abbott |
| North of Shanghai | 1939 | Jimmy Riley |
| Mr. Moto's Gamble | 1938 | Lee Chan |
| International Settlement | 1938 | Dr. Wong |
| Charlie Chan at Monte Carlo | 1937 | Lee Chan |
| Charlie Chan on Broadway | 1937 | Lee Chan |
| Charlie Chan at the Olympics | 1937 | Lee Chan |
| The Good Earth | 1937 | Elder Son |
| Charlie Chan at the Opera | 1936 | Lee Chan |
| Charlie Chan at the Race Track | 1936 | Lee Chan |
| Charlie Chan at the Circus | 1936 | Lee Chan |
| Anything Goes | 1936 | Ching (uncredited) |
| King of Burlesque | 1936 | Wong |
| Charlie Chan in Shanghai | 1935 | Lee Chan |
| Here's to Romance | 1935 | Saito |
| Shanghai | 1935 | Chinese Ambassador's Son |
| Mad Love | 1935 | Dr. Wong |
| Oil for the Lamps of China | 1935 | Young Chinese Soldier |
| Murder in the Fleet | 1935 | Consul's Secretary (uncredited) |
| Eight Bells | 1935 | Interpreter (uncredited) |
| The Casino Murder Case | 1935 | Taki - Casino Pageboy (uncredited) |
| Charlie Chan in Paris | 1935 | Lee Chan |
| The Painted Veil | 1934 | Shay Key Fong (uncredited) |
| Keye Luke | 2012 | Short | Keye Luke (Himself) |
| Alice | 1990 | Dr. Yang |
| Gremlins 2: The New Batch | 1990 | Mr. Wing |
| Superboy | 1989 | TV Series | Sensei |
| The Mighty Quinn | 1989 | Dr. Raj |
| MacGyver | 1985-1988 | TV Series | Adam Chung / Prasert |
| Dead Heat | 1988 | Mr. Thule |
| Friday's Curse | 1988 | TV Series | Lum Chen |
| Beauty and the Beast | 1988 | TV Series | Master |
| Night Court | 1986-1987 | TV Series | Mr. Shibata / Grandfather Ho |
| Sidekicks | 1986-1987 | TV Series | Sabasan |
| The Golden Girls | 1986 | TV Series | Toshiro Mitsumo |
| Jonny Quest | 1986 | TV Series | Additional Voices (voice) |
| A Fine Mess | 1986 | Ishimine |
| T.J. Hooker | 1986 | TV Series | Dr. Kenji Yakimura |
| Kung Fu: The Movie | 1986 | TV Movie | Master Po |
| Jem | 1985 | TV Series |
| Crazy Like a Fox | 1985 | TV Series |
| Blade in Hong Kong | 1985 | TV Movie |
| Street Hawk | 1985 | TV Series | Mr. Ming |
| Miami Vice | 1985 | TV Series | Lao Li |
| Trapper John, M.D. | 1984 | TV Series | Ronald Kwan Mein |
| Gremlins | 1984 | Grandfather (Mr. Wing) |
| The New Mike Hammer | 1984 | TV Series | Sun Woo |
| The A-Team | 1984 | TV Series | Sam Yeng |
| Alvin & the Chipmunks | 1983 | TV Series |
| Mister T | 1983 | TV Series voice |
| Faerie Tale Theatre | 1983 | TV Series | Imperial Doctor |
| Falcon Crest | 1983 | TV Series | Wilson Fong |
| Magnum, P.I. | 1983 | TV Series | Goto |
| Cocaine and Blue Eyes | 1983 | TV Movie | Tan Ng |
| Voyagers! | 1982 | TV Series | Kublai Khan |
| Remington Steele | 1982 | TV Series | Tanaka |
| Bret Maverick | 1981 | TV Series | Lu Sung |
| Spider-Man and His Amazing Friends | 1981 | TV Series | Genju |
| Fly Away Home | 1981 | TV Movie | Duc |
| M*A*S*H | 1978-1980 | TV Series | Choi Sung Ho / Cho Kim / Mr. Shin |
| Charlie's Angels | 1980 | TV Series | Lin |
| Thundarr the Barbarian | 1980 | TV Series | Zevon / Additional Voices |
| Battle of the Planets | 1978-1980 | TV Series | Zoltar / The Great Spirit / Colonel Cronus |
| Scooby-Doo and Scrappy-Doo | 1979 | TV Series | Additional Voices (voice) |
| Just You and Me, Kid | 1979 | Doctor Device |
| How the West Was Won | 1979 | TV Mini-Series | Leong Chung Hua |
| Vega$ | 1979 | TV Series | Henry Matsimura |
| Quincy M.E. | 1977 | TV Series | Otashi Hiyedo |
| The Amsterdam Kill | 1977 | Chung Wei |
| Hunter | 1977 | TV Series |
| Won Ton Ton: The Dog Who Saved Hollywood | 1976 | Cook in Kitchen |
| Harry O | 1976 | TV Series | Dr. Creighton Fong |
| Cannon | 1974-1975 | TV Series | Lu Chin / Sam |
| Kung Fu | 1972-1975 | TV Series | Master Po |
| Judge Dee and the Monastery Murders | 1974 | TV Movie | Lord Sun Ming |
| Judgment: The Court Martial of the Tiger of Malaya - General Yamashita | 1974 | TV Movie |
| Love, American Style | 1974 | TV Series | Hi Ching (segment "Love and the Golden Worm") |
| The Cat Creature | 1973 | TV Movie | The Thief - Joe Sung |
| Enter the Dragon | 1973 | Han (voice, uncredited) |
| The F.B.I. | 1966-1973 | TV Series | Mr. Seito / Captain Cheiu / Ken Torii / ... |
| Anna and the King | 1972 | TV Series | Kralahome |
| The Amazing Chan and the Chan Clan | 1972 | TV Series | Charlie Chan |
| Adam-12 | 1971-1972 | TV Series | Sing Hong / George Lum |
| Here's Lucy | 1972 | TV Series | Quon Fong |
| Marcus Welby, M.D. | 1971 | TV Series | David Yen / Dr. George Braley |
| Scooby Doo, Where Are You! | 1970 | TV Series | Zen Tuo / Mr. Fong |
| The Hawaiians | 1970 | Foo Sen |
| It Takes a Thief | 1968-1970 | TV Series | Dr. Tanu Woo / Dubek |
| Noon Sunday | 1970 | Colonel Oong |
| Hawaii Five-O | 1969 | TV Series | Senator John Oishi |
| The Chairman | 1969 | Professor Soong Li |
| Star Trek | 1969 | TV Series | Cory |
| The Outsider | 1968 | TV Series | Won Ah-Kam |
| Project X | 1968 | Sen Chiu (as Key Luke) |
| The Big Valley | 1968 | TV Series | Mike Chang |
| Dragnet 1967 | 1967-1968 | TV Series | George Lum / Lin Fong |
| Family Affair | 1968 | TV Series | GrandFather Chang |
| Nobody's Perfect | 1968 | Gondai-San |
| The Andy Griffith Show | 1967 | TV Series | Charlie Lee |
| Coronet Blue | 1967 | TV Series | Yasito Omaki |
| Space Ghost | 1966 | TV Series | Brak (voice) |
| Bob Hope Presents the Chrysler Theatre | 1966 | TV Series | Han |
| My Brother the Angel | 1966 | TV Series | Mr. Togosaki |
| The Wackiest Ship in the Army | 1965 | TV Series |
| I Spy | 1965 | TV Series | Lt. How |
| Jonny Quest | 1965 | TV Series | Charlie / Commissioner Wah / Panel Truck Passenger / ... |
| Perry Mason | 1962-1965 | TV Series | Choy / C. C. Chang |
| Kentucky Jones | 1964-1965 | TV Series | Thomas Wong |
| Mickey | 1964 | TV Series | Grandpa Kwan |
| The Littlest Hobo | 1963 | TV Series | Wu Chang |
| General Hospital | 1963 | TV Series | The Ancient One (1985) |
| Fair Exchange | 1962 | TV Series | Mr. Fong |
| Target: The Corruptors | 1962 | TV Series | Chang Sui |
| Follow the Sun | 1961 | TV Series | Sumarit |
| The Case of the Dangerous Robin | 1961 | TV Series |
| Trackdown | 1958 | TV Series | Wong |
| Richard Diamond, Private Detective | 1958 | TV Series | Dr. Lin Chang |
| Mike Hammer | 1958 | TV Series | Sammy Wong |
| The Gale Storm Show: Oh! Susanna | 1957-1958 | TV Series | Henry Ling / Chong |
| The Californians | 1958 | TV Series |
| Alcoa Theatre | 1958 | TV Series | Mike |
| Climax! | 1957 | TV Series | Chen |
| Panic! | 1957 | TV Series | Honolulu |
| Battle Hell | 1957 | Capt. Kuo Tai |