Diarmuid is a distinctive boys' name in United States, ranking #12973 in 2009 with 5 recorded births. This places Diarmuid in the bottom 11% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2013 with 6 births ranking #11092. In 2009, approximately 1 in every 396,661 boys born was named Diarmuid. STABLE Recent data shows the name is currently stable.