1. Kehidupan Awal dan Latar Belakang
Lon Poff dilahirkan sebagai Alonzo M. Poff pada 8 Februari 1870 di Bedford, Indiana, Amerika Syarikat. Beliau adalah anak kepada Puan Mary E. Poff dan mempunyai seorang adik perempuan bernama Grace Poff.
2. Kerjaya
Alonzo M. "Lon" Poff aktif sebagai pelakon filem dari tahun 1917 hingga 1951. Sepanjang tempoh tersebut, beliau telah membintangi hampir 100 filem, dengan salah satu penampilannya yang ketara adalah dalam filem The Iron Mask (1929).

2.1. Filmografi
Berikut adalah senarai filem terpilih di mana Lon Poff telah muncul, termasuk peranan yang dimainkan jika dinyatakan:
- 49-'17 (1917) - Bald-Headed Wrangler (tanpa kredit)
- The Scarlet Car (1917) - Constable (tanpa kredit)
- The Grand Passion (1918) - Villager (tanpa kredit)
- The Light of Western Stars (1918) - Monta Price
- The Shepherd of the Hills (1919) - Jim Lane
- The Last Straw (1920) - Rev. Beal
- Bonnie May (1920)
- Sand! (1920) - Jim Kirkwood (tanpa kredit)
- Square Shooter (1920) - Sandy
- The Man Who Dared (1920) - Long John
- The Old Swimmin' Hole (1921) - Professor Payne - Schoolmaster
- Big Town Ideas (1921) - Deputy
- The Three Musketeers (1921) - Father Joseph
- The Night Horsemen (1921) - Haw Haw
- Turn to the Right (1922) - Townsman (tanpa kredit)
- Tracked to Earth (1922) - Meeniee Wade
- The Prisoner of Zenda (1922) - Archbishop (tanpa kredit)
- The Village Blacksmith (1922) - Gideon Crane
- Peg o' My Heart (1922) - Priest (tanpa kredit)
- Brass Commandments (1923) - Slim Lally
- Suzanna (1923) - Álvarez
- The Girl I Loved (1923) - Minister (circuit rider)
- Souls for Sale (1923) - Tall Actor in Casting Office (tanpa kredit)
- Main Street (1923) - Chet Dashaway
- The Man Who Won (1923) - Sandy Joyce
- The Untameable (1923) - Bit Role (tanpa kredit)
- The Virginian (1923) - Shorty's Chum (tanpa kredit)
- The Man from Wyoming (1924) - Jim McWilliams
- Excitement (1924) - Roger Cove
- Dante's Inferno (1924) - The Secretary (tanpa kredit)
- Darwin Was Right (1924) - Egbert Swift
- Greed (1924) - Lottery Agent (tanpa kredit)
- A Fool and His Money (1925) - Citizen
- A Thief in Paradise (1925) - Jardine's Secretary
- The Million Dollar Handicap (1925) - Milkman
- Isn't Life Terrible? (1925, Pendek) - Mr. Jolly
- The Merry Widow (1925) - Sadoja's Lackey (tanpa kredit)
- Without Mercy (1925) - Madame Gordon's 1st Henchman (tanpa kredit)
- Mantrap (1926) - Minister (tanpa kredit)
- Marriage License? (1926) - Footman
- Bardelys the Magnificent (1926) - Prison Friar (tanpa kredit)
- Long Fliv the King (1926)
- The Silent Rider (1927) - Bit Part (tanpa kredit)
- The Tender Hour (1927) - Party Guest
- The First Auto (1927) - D. P. Graves (tanpa kredit)
- Silver Valley (1927) - 'Slim' Snitzer
- The Valley of the Giants (1927) - Bookkeeper (tanpa kredit)
- Two Lovers (1928) - Minor Role (tanpa kredit)
- The Man Who Laughs (1928) - (tanpa kredit)
- Wheel of Chance (1928) - Russian (tanpa kredit)
- Greased Lightning (1928) - Beauty Jones
- The Viking (1928) - Friar Slain by Vikings (tanpa kredit)
- Two Tars (1928, Pendek) - Motorist
- The Faker (1929) - Hadiran's Aid
- The Iron Mask (1929) - Father Joseph
- Courtin' Wildcats (1929) - Professor
- The Lone Star Ranger (1930) - Townsman (tanpa kredit)
- The Bad One (1930) - (tanpa kredit)
- The Laurel-Hardy Murder Case (1930, Pendek) - Old Relative (tanpa kredit)
- Noche de duendes (1930) - Anciano (tanpa kredit)
- Tom Sawyer (1930) - Judge Thatcher
- Behind Office Doors (1931) - Mr. Burden (tanpa kredit)
- I Take This Woman (1931) - Marriage License Clerk (tanpa kredit)
- Caught (1931) - Clem
- Way Back Home (1931) - Constable (tanpa kredit)
- Ambassador Bill (1931) - Armored Car Chauffeur (tanpa kredit)
- Stepping Sisters (1932) - The Depression (tanpa kredit)
- The Expert (1932) - Morgue Attendant (tanpa kredit)
- Whistlin' Dan (1932) - Jud Beal - Banker (tanpa kredit)
- So Big (1932) - Deacon (tanpa kredit)
- Midnight Warning (1932) - Welsh (tanpa kredit)
- Mystery of the Wax Museum (1933) - Tall Thin Henchman (tanpa kredit)
- Hello, Everybody! (1933) - Constable
- Diplomaniacs (1933) - Bald Adoop Indian (tanpa kredit)
- Tillie and Gus (1933) - Juror (tanpa kredit)
- Girl Without a Room (1933) - Undertaker (tanpa kredit)
- Kid Millions (1934) - Recorder (tanpa kredit)
- The Mighty Barnum (1934) - Grocer in Montage (tanpa kredit)
- I'll Love You Always (1935) - (tanpa kredit)
- Party Wire (1935) - Townsman (tanpa kredit)
- We're in the Money (1935) - Member of the Jury (tanpa kredit)
- She Couldn't Take It (1935) - Judge (tanpa kredit)
- The Rainmakers (1935) - Townsman (tanpa kredit)
- Flash Gordon (1936, Bersiri) - High Priest #1 (tanpa kredit)
- The Witness Chair (1936) - Juror (tanpa kredit)
- Let's Sing Again (1936) - (tanpa kredit)
- Bullets or Ballots (1936) - Grand Jury Member (tanpa kredit)
- The White Angel (1936) - Minor Role (tanpa kredit)
- Come and Get It (1936) - Lumberjack (tanpa kredit)
- You Only Live Once (1937) - Halsey (tanpa kredit)
- The Toast of New York (1937) - Mountaineer (tanpa kredit)
- The Texans (1938) - Moody Citizen (tanpa kredit)
- The Adventures of Tom Sawyer (1938) - Bit (tanpa kredit)
- The Great Victor Herbert (1939) - Grouchy Man (tanpa kredit)
- The House of the Seven Gables (1940) - Juror (tanpa kredit)
- Murder in the Air (1940) - Morgue Attendant (tanpa kredit)
- Back in the Saddle (1941) - George C. Joy (tanpa kredit)
- Marry the Boss's Daughter (1941) - Thorndike Beamish (tanpa kredit)
- Sullivan's Travels (1941) - Convict Watching Movie in Church (tanpa kredit)
- I Married an Angel (1942) - Mr. Dodder (tanpa kredit)
- Mrs. Wiggs of the Cabbage Patch (1942) - Cabbage Patch Character (tanpa kredit)
- This Land Is Mine (1943) - Old Man (tanpa kredit)
- The More the Merrier (1943) - Sleeper (tanpa kredit)
- The Great John L. (1945) - Health Restaurateur (tanpa kredit)
- The Desert Horseman (1946) - Café Patron (tanpa kredit)
- Joan of Arc (1948) - Guillaume Colles (tanpa kredit)
- Madame Bovary (1949) - Guest (tanpa kredit)
- Father's Little Dividend (1951) - Old Man on Porch (tanpa kredit)
3. Kematian dan Pengebumian
Lon Poff meninggal dunia pada 8 Ogos 1952 di Los Angeles, California. Beliau dikebumikan di Forest Lawn Memorial Park Cemetery yang terletak di Glendale, California.