Euthymius of Suzdal was a fourteenth-century Russian monastic who became the founding abbot of the Savior Monastery at Suzdal. By tradition he was born in 1316 in the region of Nizhny Novgorod and received monastic tonsure at the Caves monastery there under Saint Dionysius, its founder, who later became Archbishop of Suzdal. Under Dionysius he was formed in a strict ascetic discipline, and from this community he was sent to Suzdal to establish a new monastery.
In 1352 Prince Boris of Suzdal sought a monk to found a monastery in his city, and Euthymius was chosen for the task. He established the Savior monastery on the northern side of Suzdal, on high ground beyond the Kamenka River. The community was organized under a cenobitic rule, in which the monks held all things in common and each was expected to fulfill whatever obedience he was assigned. The synaxarion relates that the monastery grew until more than three hundred monks were gathered under his guidance.
Euthymius was remembered for severe personal asceticism, for his insistence on communal discipline, and for the monastery's care of the poor, the homeless, widows, and orphans. He maintained ties with Saint Sergius of Radonezh, whom he visited at the Trinity monastery, and remained under the spiritual direction of Saint Dionysius. He died on April 1, 1404, and the monastery he founded was afterward renamed in his honor. His incorrupt relics were uncovered in 1507, and he was subsequently glorified among the saints; he is commemorated on April 1, with a secondary commemoration on July 4 marking the uncovering of his relics.