Einarr Gilsson was an Icelandic poet and official. He was the lögmaður of northern and western Iceland from 1367 to 1369. He is mentioned already in letters dating from 1339 and 1340 but his years of birth and death are unknown. He appears to have lived in Skagafjörður. Finnur Jónsson characterized Einarr's poetry as "dry narratives without any poetic flight" and that as a poet Einarr is to be rated "on the whole, not highly".