Giddy (surname)
Giddy is a surname. Notable people with the name include:

 Davies Giddy or Davies Gilbert (1767–1839), British engineer, author and politician
 Lennox Giddy (1869–1942), South African cricketer
 Norman Giddy (1876–1909), South African cricketer
 Terry Giddy (1950–2023), Australian Paralympic athlete

See also
Giddey, surname