Muiz is a distinctive boys' name in United States, ranking #13421 in 2015 with 5 recorded births. This places Muiz in the bottom 5% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2004 with 6 births ranking #10898. In 2015, approximately 1 in every 383,252 boys born was named Muiz. FALLING Recent data shows the name is currently falling.