Rena is a distinctive girls' name in United States, ranking #2288 in 2008 with 86 recorded births. The name reached its all-time peak in 1996 with 135 births ranking #1286. Since 1996, the popularity has decreased by 36.3%. In 2008, approximately 1 in every 21,985 girls born was named Rena. FALLING Recent data shows the name is currently falling.