Bagrat I may refer to:

Bagrat I of Iberia, Prince in 830–876 Bagrat I of Abkhazia, King in 887–898/899 Bagrat I of Klarjeti (died in 900) Bagrat I of Tao (died March 945) Bagrat I of Imereti, the Minor, King in 1329–1330 Bagrat I, Prince of Mukhrani, Prince in 1512–1539