Is Mark on Pawn Stars also a train museum director?

You're likely thinking of Rick Harrison, the owner of the Gold & Silver Pawn Shop and the star of the show "Pawn Stars."

Mark Harrison is Rick's son, who also appears on the show.

Neither Rick nor Mark Harrison are train museum directors.

There has been some confusion because Rick Harrison has a passion for trains and owns a substantial collection of them. However, he has never publicly stated that he is the director of any train museum.