A landlord was an owner of a residential property which they rented or leased to others.
Bert was the landlord of The Cloven Hoof in Devil's End in the 20th century. (TV: The Dæmons)
Angus MacRanald was the landlord of the Fox Inn at Tulloch, Scotland. The inn was used by UNIT for a while, the inn acting like an HQ. (TV: Terror of the Zygons)
A different Bert was the Ten Bells pub landlord in 19th century London. (COMIC: Ripper's Curse)
Morgan was the landlord of the Fleur-de-Lys pub at Devesham. The Kraals made an android duplicate of him. (TV: The Android Invasion)
Jules Renan knocked out Jacques, the landlord of The Sinking Ship, which allowed Ian Chesterton to go undercover as the landlord. (TV: "Prisoners of Conciergerie")
Jacob Kewper was the landlord of an inn in Cornwall visited by the First Doctor, Polly Wright and Ben Jackson. (TV: The Smugglers)
A man named George was the landlord of the Black Swan in the mid-19th century. (PROSE: Timewyrm: Revelation) In the early 21st century, the landlords were Giles and Maria Owen. (PROSE: Not in My Back Yard)