Tammy is a distinctive girls' name in England & Wales, ranking #514 in 1998 with 53 recorded births. The name reached its all-time peak in 1996 with 92 births ranking #364. Since 1996, the popularity has decreased by 42.4%. In 1998, approximately 1 in every 5,456 girls born was named Tammy. FALLING Recent data shows the name is currently falling.