Alphonse Hubert François Balat (French pronunciation: [alfɔ̃s ybɛʁ fʁɑ̃swa bala]; 15 May 1818 – 16 September 1895) was a Belgian architect.

In 1856, he constructed the town palace (Hôtel) of the Marquess of Assche (Asse) in the newly planned district called the Leopold Quarter.

It was noticed for its austere classical neo-Renaissance facade inspired by Michelangelo's Palazzo Farnese in Rome.

His design for the principal facade of the palace is deeply influenced by the work of the French architect Ange-Jacques Gabriel.

It consists of a huge complex of several dome-shaped buildings in iron and glass that are connected by glass-roofed galleries.

This formed a first step towards Art Nouveau architecture that was further developed by Victor Horta who served as an apprentice of Balat.