Jean Joseph Beaulard, known as Le Sieur Beaulard (died after 1775), was a French fashion merchant and fashion designer.
He was one of the four top fashion merchants alongside Rose Bertin, Madame Eloffe and Mademoiselle Alexandre during the reign of Louis XVI, and is described as the rival and predecessor of Rose Bertin as the leading fashion designer in France. He was particularly known for his inventions within hats and headdresses. He had clients within the royal court and aristocracy, and was internationally famous at the time. His most known clients were queen Marie Antoinette and Louis XV's mistress, Madame du Barry.