Robert Pierson may refer to:

• Robert H. Pierson (1911–1989), leading figure in the Seventh Day Adventists
• Robert Laughlin Pierson (1926–1997), Episcopal clergyman and Freedom Rider
• Robert Scott Pierson, Canadian shipping magnate
  • MV Robert S. Pierson, a lake freighter built in 1973
• Robert Pierson (undercover officer), testified at the Chicago 7 trial, see Chicago 10
• Robert Pierson (voice actor), see Iczer Girl Iczelion

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