- A habitational surname derived from the Scottish places.
- An Irish surname, an Anglicization of Ó Leocháin.
- A male given name transferred from the surnames. Used since at least the 19th century, and popular in the 2000s.
- A female given name used since the 1990s; much less common than the male name.
- Places in Scotland, Canada, U.S., and Australia.
- 1781 Robert Burns: Logan Braes:
- O Logan, sweetly didst thou glide,
- That day I was my Willie's bride,
- And years sin syne hae o'er us run,
- Like Logan to the simmer sun
- 1782 Thomas Jefferson: Notes on the State of Virginia: ( Chief Logan's Lament )
- Col. Cresop, the last spring, in cold blood, and unprovoked, murdered all the relations of Logan, not sparing even my women and children. - - - Logan never felt fear. He will not turn on his heel to save his life. Who is there to mourn for Logan? No one.
- 2003 Dale Alderman: Being a Dad: The Stuff No One Told Me. →ISBN page 18:
- "How about Logan?"
- "That's it. The perfect name!" I exclaimed. Starla liked the name, and I thought it was exceedingly cool because one of the most exciting characters in the X-Men comics is also named Logan (nicknamed Wolverine). - - - I didn't tell Starla about the comic book connection because she would probably think I was being stupid.