Sissy is a distinctive girls' name in United States, ranking #7654 in 1999 with 13 recorded births. The name reached its all-time peak in 2002 with 15 births ranking #7388. Since 1996, the popularity has increased by 85.7%. In 1999, approximately 1 in every 136,445 girls born was named Sissy. FALLING Recent data shows the name is currently falling.