Thomas or Tom Peterson or Petersen may refer to:

• Thomas Mundy Peterson (1824–1904), first African American to vote in an election under the U.S. Constitution
• Tommy Peterson (footballer) (1898–1950), Australian rules footballer
• Tom Peterson (1930–2016), American retailer, pitchman and television personality
• Tom Peterson (cyclist) (born 1986), American professional road racing cyclist
• Thomas C. Peterson, American climatologist
• Thomas E. Petersen, Commissioner of the Minnesota Department of Agriculture
• Thomas Peterson (politician), Utah state representative

See also[edit]

• Tom Petersson (born 1951), American musician, member of Cheap Trick
• Thomas Ring Petersen (born 1980), better known as Thomas Ring, Danish singer
• Tom Pettersen (1935–1994), Norwegian swimmer
• Tom Pettersson (born 1990), Swedish footballer
• Peterson (name)