The Schomberg Fair is an annual agricultural fair held in late May in Schomberg, a community in the township of King in Ontario, Canada. It starts on the Thursday following Victoria Day, and runs through to Sunday. It is staged at the Schomberg Agricultural Fairgrounds, also known as the Schomberg Fairgrounds, which is adjacent to the Holland River. The fair has expanded beyond simply an agricultural showcase, and now includes numerous activities. No fair was held between 1917–18 nor 1942–45. The 2020 fair was cancelled as a result of the COVID-19 pandemic in Ontario.