The 2019–20 Beşiktaş J.K. season was the club's 116th year since its foundation, 98th season of competitive football and the club's 61st season contesting the Süper Lig, the top division of Turkish football.

On 1 June 2019, Şenol Güneş became manager of the Turkey national team,[1] with Abdullah Avcı taking over in his place.

On 19 March, the Turkish Football Federation suspended all football due to the COVID-19 pandemic.

[2] On 4 May, Loris Karius announced that he had terminated his loan deal with Beşiktaş.

[3] On 13 May, the Turkish Football Federation announced that the Süper Lig would resume on 12 June.