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 (#5897 out of 88799, Top 7%). (2000 U.S. Census)
Displayed below is a comparison of the usage of Su and related names. Popular related forms of Su (#unlisted) are Susan (#851 the previous year), Susie, Suzan, Suzy, Susann, Susana, Sudie, Sue and Sanna. This girl name was at the height of its popularity during the years 1950-1959 and has become much less widespread since, with versions like Susan, Suzan, Susie, Susana and Sudie becoming somewhat outmoded. (Top 1000 Birth Names Statistics, 2014)