Tammy is a distinctive girls' name in England & Wales, ranking #645 in 2000 with 39 recorded births. The name reached its all-time peak in 1996 with 92 births ranking #364. Since 1996, the popularity has decreased by 57.6%. In 2000, approximately 1 in every 7,004 girls born was named Tammy. FALLING Recent data shows the name is currently falling.