The 2019–20 Big East Conference men's basketball season began with practices in October 2019, followed by the start of the 2019–20 NCAA Division I men's basketball season in November.

In April 2019, Chris Mullin resigned as the head coach of St. John's, leaving the program after four seasons.

[1] On April 19, Arkansas head coach Mike Anderson was hired by St. John's as Mullin's replacement.

[3] *Schedule Source:[4] This table summarizes the head-to-head results between teams in conference play.

Markus Howard* – Marquette Myles Powell* – Seton Hall Saddiq Bey* – Villanova Kamar Baldwin – Butler Ty-Shon Alexander – Creighton Naji Marshall – Xavier Marcus Zegarowski* – Creighton Paul Reed – DePaul Collin Gillespie – Villanova Alpha Diallo – Providence Tyrique Jones – Xavier Ömer Yurtseven - Georgetown Quincy McKnight - Seton Hall Jeremiah Robinson-Earl* – Villanova Justin Moore* – Villanova Romeo Weems – DePaul Julian Champagnie – St. John's Zach Freemantle – Xavier KyKy Tandy – Xavier