The 2018–19 Siena Saints men's basketball team represented Siena College during the 2018–19 NCAA Division I men's basketball season.

They played their home games at the Times Union Center in Albany, New York as members of the Metro Atlantic Athletic Conference and were led by first-year head coach Jamion Christian.

[1] The school promoted assistant coach Carmen Maciariello to fill the vacancy on March 26.

On April 13, 2018, head coach Jimmy Patsos resigned amid an investigation regarding abusive conduct and financial improprieties within the program.

[3][4] On May 2, the Saints hired Mount St. Mary's head coach Jamion Christian for the job.