Tammy is a distinctive girls' name in England & Wales, ranking #637 in 2003 with 45 recorded births. The name reached its all-time peak in 1996 with 92 births ranking #364. Since 1996, the popularity has decreased by 51.1%. In 2003, approximately 1 in every 6,193 girls born was named Tammy. FALLING Recent data shows the name is currently falling.