Walter B. McGrail (October 19, 1888 – March 19, 1970) was an American film actor. He appeared in more than 150 films between 1916 and 1951. Besides feature films, he appeared in The Scarlet Runner, a 12-chapter serial.
McGrail was born in Brooklyn, New York, and died in San Francisco, California, at the age of 81.

Selected filmography
Thou Art the Man (1916) – Bearer
The Ordeal of Elizabeth (1916) – Elizabeth's Father
Lights of New York (1916) – Hawk Chovinski
The Scarlet Runner (1916) – Morley Chester
The Dollar and the Law (1916) – George Gray
Indiscretion (1917) – Jimmy Travers
The Courage of Silence (1917) – Saunders
Womanhood, the Glory of the Nation (1917) – Count Dario
Within the Law (1917) – Dick Gilder
Over There (1917) – Minor Role
The Song of the Soul (1918) – Dr. Evans
The Business of Life (1918) –
The Triumph of the Weak (1918) – Jim Roberts
Find the Woman (1918) – Maurice Dumars
To the Highest Bidder (1918) – David Whitcomb
Everybody's Girl (1918) – Blinker
Miss Ambition (1918) – Larry Boyle
Brown of Harvard (1918) – Gerald Thorne
The Adventure Shop (1919) – Josephus Potts, Jr
The Girl, Glory (1919) – Ernest Sanford
The Country Cousin (1919) – George Tewksbury Reynolds III
The Black Secret (1919) – Ray McKay
Greater Than Fame (1920) – Jack Martin
Blind Youth (1920) – Maurie Monnier
The Invisible Divorce (1920) – Jimmy Ryder
Life's Twist (1920) – Steven De Koven
Darling Mine (1920) – Roger Davis
Beware of the Bride (1920) – Billy Emerson
Habit (1921) – Charles Munson
The Breaking Point (1921) – Richard Janeway
Playthings of Destiny (1921) – Hubert Randolph
Pilgrims of the Night (1921) – Gilbert Hannaway
The Invisible Fear (1921) – Arthur Comstock
Her Mad Bargain (1921) – David Leighton
The Cradle (1922) – Courtney Webster
The Top of New York (1922) – Emery Gray
The Yosemite Trail (1922) – Ned Thorpe
The Kentucky Derby (1922) – Ralph Gordon
Nobody's Money (1923) – Frank Carey
Suzanna (1923) – Ramón
Is Divorce a Failure? (1923) – Kelcey Barton
Where the North Begins (1923) – Gabrielle Dupree
The Eleventh Hour (1923) – Dick Manley
The Bad Man (1923) – Morgan Pell
Lights Out (1923) – Sea Bass
Flaming Youth (1923) – Jamieson James
A Son of the Sahara (1924) – Captain Jean Duval
Unguarded Women (1924) – Larry Trent
Gerald Cranston's Lady (1924) – Gordon Ibbotsleigh
Is Love Everything? (1924) – Boyd Carter
The Dancers (1925) – The Argentine
Adventure (1925) – Tudor
Champion of Lost Causes (1925) – Zanten / Dick Sterling






