Prather Coliseum is a 3,900-seat multi-purpose arena in Natchitoches, Louisiana, United States. It opened in 1964 and is home to the Northwestern State University Demons basketball team. The arena also holds concerts and events. It was named in honor of the school's most successful basketball and football coach, H. Lee Prather, who served from the 1910s through the 1940s before becoming NSU President in 1951.