Ruff, 63, guided the Devils (52-22-8, 112 points) to franchise records in wins and points during the regular season. The 112 points marked a 49-point gain from 2021-22.
New Jersey defeated the Hudson River-rival New York Rangers in the first round of the Eastern Conference playoffs before falling to the Carolina Hurricanes in the second.
A Jack Adams Award finalist for the fourth time and for a third different franchise, Ruff won the honor with the Buffalo Sabres in 2005-06.
Ruff is 98-98-24 during his three seasons with the Devils. He is 834-652-149 with 78 ties in 1,713 career games with the Sabres, Dallas Stars and Devils.