Rena is a distinctive girls' name in United States, ranking #1935 in 2007 with 107 recorded births. The name reached its all-time peak in 1996 with 135 births ranking #1286. Since 1996, the popularity has decreased by 20.7%. In 2007, approximately 1 in every 17,967 girls born was named Rena. FALLING Recent data shows the name is currently falling.