What does Yanni mean?
Yanni \ya(n)-ni\ as a name for boys is of Hebrew and Greek derivation, and the name Yanni means "God is gracious". Yanni is a variant of John (Hebrew). Yanni is also a variant of Yannis (Greek, Hebrew).
Yanni has 27 more different forms via John, Yannis: Ean▼, Gianni, Giannis, Hannes, Hanno, Hans▼, Hansl, Heanno, Iain, Ian, Ioannis, Ivann, Jan▼, Jancsi, Janek, Janko, Janne, Janos, Jianni, Jonnie, Jovanni▼, Seann, Vanek, Vanko, Vanya, Yannakis and Zane.
Yanni is an uncommon first name for males but a very popular last name for all people (#30061 out of 150436, Top 20%). (2000 U.S. Census)
John (#26 a year ago), Ian (#77), Zane (#224), Gianni (#515), Jovanni (#943), Ean (#997), Jonnie, Jan, Hans, Iain and Hannes are the popular related forms of Yanni (#unlisted) ranked in the Top 1000. These boy names were at the height of their popularity in 2006 (usage of 0.3392%) and are somewhat less popular today (usage 0.2925%, down 13.7%), with the forms Ean, Jovanni, Hans and Jan becoming less in vogue. Gianni (#515), Zane (#224) and Ian (#77) are three of the more fashionable names for newborns among these. Shown below is a comparison of the popularity of the boy name Yanni and related names. (2014 Birth Statistics)