Pedro I

Pedro I may refer to:


 * Pedro I Fadrique (died in 1355)
 * Pedro I of Portugal (1320–1367)
 * Pedro of Castile (known as The Cruel) (1334–1369)
 * Pedro I of Kongo (ruled 1543–1545)
 * Pedro I of Brazil (1798–1834)
 * Brazilian ship Pedro I