- Byrd, William Byrd - English organist and composer of church music; master of 16th century polyphony; was granted a monopoly in music printing with Thomas Tallis (1543-1623)
--1 is a kind of organist; composer
- Byrd, Richard E. Byrd, Richard Evelyn Byrd, Admiral Byrd - explorer and United States naval officer; led expeditions to explore Antarctica (1888-1957)
--2 is a kind of explorer, adventurer; naval officer