Sinclair is a distinctive girls' name in United States, ranking #5716 in 2023 with 22 recorded births. The name reached its all-time peak in 2025 with 29 births ranking #4740. Since 1996, the popularity has increased by 22.2%. In 2023, approximately 1 in every 72,848 girls born was named Sinclair. RISING Recent data shows the name is currently rising.