Sinead is a distinctive girls' name in England & Wales, ranking #3333 in 2025 with 7 recorded births. The name reached its all-time peak in 2003 with 312 births ranking #154. Since 1996, the popularity has decreased by 96.5%. In 2025, approximately 1 in every 36,183 girls born was named Sinead. FALLING Recent data shows the name is currently falling.