Tammi is a distinctive girls' name in United States, ranking #7191 in 1999 with 14 recorded births. The name reached its all-time peak in 1996 with 16 births ranking #6035. Since 1996, the popularity has decreased by 12.5%. In 1999, approximately 1 in every 126,699 girls born was named Tammi. FALLING Recent data shows the name is currently falling.