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The Diplomat Season 4 Episode release dates & where to watch

Released

Thursday, October 15, 2026

All episodes at once

When does The Diplomat Season 4 come out?

All 8 episodes of The Diplomat Season 4 were released at once on Thursday, October 15, 2026 on Netflix.

In Season Four, two marriages threaten to eat each other alive. One catastrophic moment shatters the fragile peace Kate Wyler brokered between the US and UK, as well as the crumbling marriage she's trying to save. While she fights to stem the bleeding, President Grace Penn and VP Hal Wyler's conspiracy to steal Russia's most powerful weapon hurtles the United States toward war. Kate and Todd, at best an uneasy pair, unite to stop the Grace-Hal alliance from upending the balance of power abroad and at home.

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The Diplomat Season 4 release schedule

The Diplomat Season 4 episode release dates
Episode Release date

1. Episode 1

Thursday · 3 weeks ago

2. Episode 2

Thursday · 3 weeks ago

3. Episode 3

Thursday · 3 weeks ago

4. Episode 4

Thursday · 3 weeks ago

5. Episode 5

Thursday · 3 weeks ago

6. Episode 6

Thursday · 3 weeks ago

7. Episode 7

Thursday · 3 weeks ago

8. Episode 8 Finale

Thursday · 3 weeks ago

The Diplomat Season 4 FAQ

When does The Diplomat Season 4 come out?

The Diplomat Season 4 premiered Thursday, October 15, 2026 on Netflix.

How many episodes are in The Diplomat Season 4?

The Diplomat Season 4 has 8 episodes.

Are new episodes of The Diplomat Season 4 released weekly?

All episodes are released at once.

When is the The Diplomat Season 4 finale?

The The Diplomat Season 4 finale (Episode 8) aired Thursday, October 15, 2026.

How do I get notified when new The Diplomat Season 4 episodes are released?

Download the Streambay app and follow The Diplomat. You'll get a push notification the moment each new episode is out.

Never miss The Diplomat Season 4.

Download Streambay and follow The Diplomat. We’ll notify you the moment Season 4 is released, and as each new episode comes out. It’s free, with no sign-up and no personal information required.

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