Phi is a distinctive boys' name in United States, ranking #3788 in 1996 with 18 recorded births. This places Phi in the top 36% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1996 with 18 births ranking #3788. In 1996, approximately 1 in every 105,235 boys born was named Phi. RISING Recent data shows the name is currently rising.