Badalyan () is an Armenian surname. Notable people with the surname include:
Gagik Badalyan (born 1980), Armenian classical, pop and folk singer Gevorg Badalyan (born 1991), Armenian footballer Hovhannes Badalyan (1924–2001), Armenian singer Lusine Badalyan (born 1980), Armenian television presenter and politician Sergey Badalyan (1947–1999), Armenian politician Vahe Badalyan (born 2007), Armenian singer