Ralph I

Ralph I may refer to:


 * Rudolph of France (c. 890 – 936)
 * Ralph I of Périgord (d. 975)
 * Ralph I, Count of Vermandois (1085–1152)
 * Ralph I, Lord of Coucy (c. 1134 – 1191)
 * Ralph I, Count of Eu (b. 1160/1165 – d. 1219)
 * Raoul I of Brienne, Count of Eu (d. 1344)
 * The fictional King Ralph