Senna is the name of a "flowering plant" whose leaves have been used in medicine for centuries, from the Arabic sana; some parents also see it as a short form of names ending in -senna or a sister name to Sienna. The Brazilian racing legend Ayrton Senna made it a surname-style option, and it is a popular girls' name in the Netherlands. Senna has risen in the United States from around number 3900 in 2015 to number 1757 among girls' names in 2025, its highest rank so far.