(1953) How to Marry a Millionaire

as J.D. Hanley

(1934) The Thin Man

as Nick Charles

(1940) I Love You Again

as Larry Wilson aka George Carey

(1937) Double Wedding

as Charles Lodge

(1941) Love Crazy

as Steve Ireland

(1949) Take One False Step

as Andrew Gentling

(1936) Libeled Lady

as William 'Bill' Stephens Chandler

(1944) The Heavenly Body

as William S. Whitley

(1936) My Man Godfrey

as Godfrey

(1934) Manhattan Melodrama

as Jim Wade

(1932) One Way Passage

as Dan Hardesty

(1947) Life with Father

as Clarence Day Sr.

(1939) Another Thin Man

as Nick Charles

(1941) Shadow of the Thin Man

as Nick Charles

(1936) After the Thin Man

as Nick Charles

(1947) Song of the Thin Man

as Nick Charles

(1944) The Thin Man Goes Home

as Nick Charles

(1942) Crossroads

as David Talbot aka Jean Pelletier

(1936) The Great Ziegfeld

as Florenz 'Flo' Ziegfeld Jr.

(1945) Ziegfeld Follies

as Florenz Ziegfeld Jr.

(1947) The Senator Was Indiscreet

as Senator Melvin G. Ashton

(1955) Mister Roberts

as Doc

(1932) High Pressure

as Gar Evans

(1933) Private Detective 62

as Donald Free

(1930) The Benson Murder Case

as Philo Vance

(1932) Jewel Robbery

as The Robber

(1935) Reckless

as Ned Riley

(1928) The Last Command

as Lev Andreyev

(1929) The Canary Murder Case

as Philo Vance

(1983) Hollywood Out-takes and Rare Footage

as Self (archive footage) (uncredited)

(1928) Feel My Pulse

as Her Nemesis

(1922) When Knighthood Was in Flower

as Francis I

(1922) Sherlock Holmes

as Forman Wells

(1952) The Treasure of Lost Canyon

as Homer 'Doc' Brown

(1953) The Girl Who Had Everything

as Steve Latimer

(1924) Romola

as Tito Melema

(1951) It's a Big Country

as Professor

(1949) Dancing in the Dark

as Emery Slade

(1948) Mr. Peabody and the Mermaid

as Mr. Peabody

(1938) The Baroness and the Butler

as Johann Porok

(1946) The Hoodlum Saint

as Terence Ellerton 'Terry' O'Neill

(1937) The Last of Mrs. Cheyney

as Charles

(1934) The Key

as Capt. Bill Tennant

(1937) The Emperor's Candlesticks

as Baron Stephan Wolensky

(1935) Rendezvous

as Lt. William 'Bill' Gordon / Anson Meridan

(1935) Star of Midnight

as Clay Dalzell

(1936) The Ex-Mrs. Bradford

as Dr. Lawrence 'Brad' Bradford

(1934) Evelyn Prentice

as John Prentice

(1933) The Kennel Murder Case

as Philo Vance

(1934) Fashions of 1934

as Sherwood Nash

(1929) The Greene Murder Case

as Philo Vance

(1931) Man of the World

as Michael Trevor

(1929) The Four Feathers

as Capt. William Trench

(1927) Paid to Love

as Prince Eric

(1943) The Youngest Profession

as William Powell

(1927) Nevada

as Clan Dillon

(1932) Lawyer Man

as Anton Adam

(1928) Interference

as Philip Voaze

(1930) Street of Chance

as John D. Marsden / 'Natural' Davis

(1935) Escapade

as Fritz

(1933) Double Harness

as John Fletcher

(1926) Beau Geste

as Boldini

(1929) Charming Sinners

as Karl Kraley

(1931) The Road to Singapore

as Hugh Dawltry

(1930) Behind the Make-Up

as Gardoni

(1929) Pointed Heels

as Robert Courtland

(1930) For the Defense

as William Foster

(1923) The Bright Shawl

as Gaspar De Vaca

(1926) The Great Gatsby

as George Wilson

(1931) Ladies' Man

as Jamie Darricott

(1984) Going Hollywood: The '30s

as (archive footage)

(1961) Hollywood: The Selznick Years

as Jim Wade (archive footage) (uncredited)

(1928) Forgotten Faces

as Froggy

(1926) The Runaway

as Jack Harrison

(1928) Partners in Crime

as Smith

(1930) Shadow of the Law

as Jim Montgomery aka John Nelson

(1927) Special Delivery

as Harold Jones

(1930) Paramount on Parade

as Philo Vance

(1926) Aloma of the South Seas

as Van Templeton

(1964) The Big Parade of Comedy

as Nick Charles (archive footage)

(1935) La Fiesta de Santa Barbara

as Self

(1930) The Voice of Hollywood

as ---

(1993) Harlow: The Blonde Bombshell

as Self (archive footage)

(1924) Dangerous Money

as Prince Arnoldo da Pescia

(1925) Too Many Kisses

as Don Julio

(1922) Outcast

as DeValle

(1923) Under the Red Robe

as Duke of Orleans

(1925) Faint Perfume

as Barnaby Powers

(1925) My Lady's Lips

as Scott Seldon

(1926) White Mice

as Roddy Forrester

(1926) Sea Horses

as Lorenzo Salvia

(1925) The Beautiful City

as Nick Di Silva

(1926) Desert Gold

as Snake Landree

(1926) Tin Gods

as Tony Santelli

(1927) New York

as Trent Regan

(1927) Time to Love

as Prince Alado

(1928) The Drag Net

as Dapper Frank Trent

(1927) She's a Sheik

as Kada

(1927) Love's Greatest Mistake

as Don Kendall

(1928) The Vanishing Pioneer

as John Murdock

(1975) Brother, Can You Spare a Dime?

as Self (archive footage)

(1940) Hollywood: Style Center of the World

as Self

(1976) That's Entertainment, Part II

as (archive footage)

(1939) From the Ends of the Earth

as Self

(1940) A New Romance of Celluloid: The Miracle of Sound

as Self

(1937) The Romance of Celluloid

as Self (archive footage)

(1945) The Great Morgan

as William Powell (voice) (uncredited)

(1928) Beau Sabreur

as Becque

(1986) The Spencer Tracy Legacy: A Tribute by Katharine Hepburn

as Self (archive footage)

(1990) Myrna Loy: So Nice to Come Home To

as (archive footage)

(2005) William Powell: A True Gentleman

as ---

(1944) Twenty Years After

as (archive footage)

(1927) Senorita

as Manuel Oliveros

(1988) James Stewart: A Wonderful Life

as Self (archive footage)

(1976) It's Showtime

as Self (archive footage)

(2017) Cinecittà Babilonia: Sex, Drugs and Black Shirts

as Self - Actor (archive footage)