The Diplomat Season 3: What We Know So Far

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Keri Russell’s disheveled diplomat Kate Wyler has some big shoes she’s about to (be forced to) fill. After season 2 of Netflix’s political drama The Diplomat ended on a huge twist, the series is barreling toward a third chapter—one with major implications for Kate’s career, widening the target already strapped to her back. Here’s what we know so far about the series’ third season, which Netflix confirmed prior to season 2’s release.

Will there be a season 3 of the The Diplomat?

Yes. Before season 2 hit screens in October 2024, Netflix shared the news that The Diplomat would receive a season 3—and that, in fact, production was already underway in London and New York City.

“After an amazing summer shooting in the UK, we brought London home to NY,” said series creator Debora Cahn in a statement. “Best of both worlds—filming in Brooklyn. We love doing this. We’re so excited to get to keep going.”

Who will be in the cast?

Expect many of the main players to return, including Russell as Kate, Rufus Sewell as Kate’s ambassador husband Hal Wyler, Allison Janney as U.S. Vice President Grace Penn, David Gyasi as British Foreign Secretary Austin Dennison, Ali Ahn as London CIA Chief Eidra Park, Rory Kinnear as Prime Minister Nicol Trowbridge, and Ato Essandoh as Deputy Chief of Mission Stuart Hayford.

Netflix also announced that Bradley Whitford is joining the cast as Todd Penn, Grace Penn’s husband, marking a West Wing reunion for him and Janney.

allison janney as grace penn in episode 206 of the diplomat

Alex Bailey/Netflix//Netflix

When will The Diplomat season 3 come out?

The Diplomat will return to Netflix on Oct. 16, 2025.

Is there a trailer for season 3?

Yes, the official trailer has been released:

Previously, Netflix shared first-look photos of season 3, including images of Whitford joining the cast.

the diplomat l to r rufus sewell as hal wyler, allison janney as grace penn, bradley whitford as todd penn, keri russell as kate wyler in episode 306 of the diplomat cr clifton prescodnetflix

Netflix

the diplomat l to r allison janney as grace penn, bradley whitford as todd penn in episode 306 of the diplomat cr clifton prescodnetflix 2025

Netflix

Allison Janney and Bradley Whitford in The Diplomat.

The streamer also released two teasers:

As well as additional first-look images:

the diplomat. allison janney as grace penn in episode 308 of the diplomat. cr. clifton prescod/netflix © 2025

Clifton Prescod//Netflix

the diplomat. nana mensah as billie appiah in episode 301 of the diplomat. cr. liam daniel/netflix © 2025

Liam Daniel//Netflix

the diplomat. (l to r) rufus sewell as hal wyler, keri russell as kate wyler in episode 308 of the diplomat. cr. courtesy of netflix © 2025

Netflix

the diplomat. (l to r) bradley whitford as todd penn, allison janney as grace penn in episode 308 of the diplomat. cr. courtesy of netflix © 2025

Netflix

This story will be updated.