Tammy is a distinctive girls' name in England & Wales, ranking #866 in 2005 with 32 recorded births. The name reached its all-time peak in 1996 with 92 births ranking #364. Since 1996, the popularity has decreased by 65.2%. In 2005, approximately 1 in every 9,008 girls born was named Tammy. FALLING Recent data shows the name is currently falling.