Sandy is a popular unisex given name or nickname.
The male version can be a diminutive of Alexander, Sander, Alasdair, Sandipan, Sandeep, Sanford, Santiago, etc., while the female version can be a diminutive for Sandra (itself a diminutive of Alexandra and Cassandra) or, less commonly, Alisande.
Spelling variations include Sandi and Sandie.
Notable people named Sandy include: