Surname Gaidt (Гайдт 
, Gaidt 
) , around the globe, is a rare family name. The family name Gaidt is habitual in Kazakhstan, where it is a rare surname, Belarus, and Germany, where it is a very rare surname. Measured by absolute frequency, it is commonest in Kazakhstan, Germany, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Гайдт | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Gaidt | Germany, Russia |
| andreas gaidt (b. 1958) |
|