The 2015 Ottawa Redblacks season was the second season for the team in the Canadian Football League. The Redblacks improved upon their unimpressive 2–16 record from 2014 after just five games when they collected their third win in week five against the Calgary Stampeders. Ottawa clinched a playoff berth in week 17 with a victory over the Winnipeg Blue Bombers on October 16, 2015. The Redblacks became the first Ottawa-based CFL team to have a winning record since 1979. They were also the first Ottawa-based CFL team to finish first in East Division since the 1978 Rough Riders and the first Ottawa-based team ever to finish with at least 12 regular season wins.