Rena is a distinctive girls' name in United States, ranking #1922 in 2004 with 98 recorded births. The name reached its all-time peak in 1996 with 135 births ranking #1286. Since 1996, the popularity has decreased by 27.4%. In 2004, approximately 1 in every 18,736 girls born was named Rena. FALLING Recent data shows the name is currently falling.