Gilberton:

Classics Illustrated (1941) 12

Eternity Comics:

Headless Horseman (1989) 1-2

DC Comics:

[One Shot] Sleepy Hollow (2000)

See: MEDIA’2013: Sleepy Hollow – A History of Comics Index

Scout Comics:

Headless (2019) 1-2

Dark Horse Comics:

[One Shot] Headless Horseman Halloween Annual (2023)

[One Shot] Headless Horseman Halloween Annual (2024)