Leo I.
Leo I is the name of:
- Leo I ( 400-461 order ), Pope, see Leo the Great
- Leo I ( Byzantium ) (also Leo I, at 401-474 ), Emperor of Byzantium
- Leo I ( Abkhazia ) ( 735 to 791 ), King of Abkhazia
- Leo I (Armenia ) ( † 1140 ), King of Armenia
See also:
- Leo -I group, a group of galaxies in the constellation Leo
- Leo I Dwarf Galaxy, a dwarf galaxy in the constellation of the Lion
- Disambiguation