Sinead is a distinctive girls' name in England & Wales, ranking #569 in 2011 with 71 recorded births. The name reached its all-time peak in 2003 with 312 births ranking #154. Since 1996, the popularity has decreased by 64.9%. In 2011, approximately 1 in every 4,526 girls born was named Sinead. FALLING Recent data shows the name is currently falling.