Ealhmund was King of Kent in 784. He was probably the father of King Ecgberht who was King of Wessex from 802, and who conquered Kent in the 820s. Ecgberht was the grandfather of King Alfred the Great.

King Offa of Mercia conquered Kent in the 760s, but he had lost control by the late 770s, when King Ecgberht II issued charters in his own name without any reference to Offa. The only contemporary evidence of Ealhmund is a charter he issued as king of Kent, also without any reference to Offa, in 784. The charter granted land at Sheldwich in Kent to the abbot of Reculver. Ealhmund is not known to have struck any coins, and by 785 Offa had regained control of Kent. Ealhmund had probably been killed or driven out.