Dom Pedro (Lord Peter) is the traditional Portuguese appellation of several kings of Portugal:
- Pedro I of Portugal
- Pedro II of Portugal
- Pedro III of Portugal
- Pedro IV of Portugal
- Pedro V of Portugal
and of the two 19th-century Emperors of Brazil:
- Pedro I of Brazil
- Pedro II of Brazil
Others
- Dom Pedro (card game), American card game of the All Fours family
- Dom Pedro V Theatre
- D. Pedro V High School
- The Dom Pedro aquamarine
- Steamship Wyreema renamed to Dom Pedro I