Grozdanov () is a surname. The feminine form is Grozdanova (). Notable people with the surname include:
Branimir Grozdanov (born 1994), Bulgarian volleyball player Cvetan Grozdanov (1936–2018), Macedonian art historian Dilyana Grozdanova (1957–2025), Bulgarian politician Kire Grozdanov (born 1970), Macedonian football player Kiril Grozdanov (born 1997), Bulgarian football player Plamen Grozdanov (born 1950), Bulgarian diplomat Stefan Grozdanov (born 1946), Bulgarian football player and manager Tihomir Grozdanov (born 1987), Bulgarian tennis player