In this year, each tie was played on a home-and-away two-legged basis.
If still tied, extra time would not be played, and the penalty shoot-out would be used to determine the winner.
[3] A draw for the fourth round was held by CBF on March 17, 2017.
[4] Tied 3–3 on aggregate, Sport won on penalties and advanced to the round of 16.
Tied 2–2 on aggregate, Internacional won on penalties and advanced to the round of 16.