Tay

Proper noun

 * , originating on the slopes of Ben Lui and flowing eastwards through the city of Perth before becoming an estuary, the Firth of Tay.
 * , a left tributary of the Rideau.
 * , a left tributary of the Rideau.

Etymology 2
Borrowed from,  , or a variant of the English surname.

Statistics

 * According to the 2010 United States Census, Tay is the 16,536th most common surname in the United States, belonging to 1736 individuals. Tay is most common among Asian/Pacific Islander (58.12%) and White individuals (19.47%).

Etymology 3
.