Tammy is a distinctive girls' name in United States, ranking #2986 in 2011 with 58 recorded births. The name reached its all-time peak in 1998 with 254 births ranking #841. Since 1996, the popularity has decreased by 74.2%. In 2011, approximately 1 in every 30,324 girls born was named Tammy. RISING Recent data shows the name is currently rising.