What does Su mean?
Su has 30 more different forms via Susan: San, Sanna, Shushu, Siusan, Sonel, Suanny, Sudie▼, Sueann, Suesan, Sukee, Sukey, Sukie, Sunel, Susana▼, Susann, Suse, Susee, Susen, Susi, Susie▼, Susy, Suzan▼, Suzana, Suzane, Suze, Suzee, Suzi, Suzie, Suzon and Suzy.
Su is a very prominent first name for women (#1731 out of 4276, Top 40%) and also a very prominent last name for all people (#3835 out of 150436, Top 3%). (2000 U.S. Census)
Popular related forms of Su (#unlisted) are Susan (#851 the previous year), Susie, Suzan, Suzy, Susann, Susana, Sudie, Sue and Sanna. These girl names were at the height of their popularity during the years 1950-1959 (usage of 0.3738%) and have become much less widespread since (usage 0.0166%, down 95.6%), with versions like Susan, Sue, Sudie, Suzan and Susie becoming somewhat outmoded. Displayed below is a comparison of the usage of Su and related names. (Top 1000 Birth Names Statistics, 2014)