The fourth season of Dynasty, an American television series based on the 1980s prime time soap opera of the same name, premiered in the United States on The CW on May 7, 2021.

Notable recurring characters featured in season four include Wil Traval as Father Caleb Collins; Ashley Day as Colin McNaughton; Kara Royster as Eva; and Eliza Bennett as Amanda Carrington.

[27] Showrunner Josh Reims, hoping to use reworked versions of the two unproduced scripts to start the fourth season, said in May 2020 these episodes feature Fallon and Liam's wedding; Blake going to war with Alexis, Jeff and Adam; Sam's new relationship with Ryan; and the return of the Moldavians.

[citation needed] On November 5, 2020, Daniella Alonso revealed on a podcast that she was pregnant with her first child; she further verified her real-life pregnancy would not be affecting Cristal's storyline in any capacity, and she would go on maternity leave a week prior to production shutting down for winter hiatus.

[38] In June 2021, showrunner Josh Reims revealed that Geovanni Gopradi would return as Cristal's brother, Beto.

[39] Michael Fairman also reported Laura Leighton's casting in the guest role of Corinne Simon, an SEC officer.