National Cryptologic Museum | Cryptologic History

An official website of the United States government

Here's how you know

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

NOTICE: On Friday, 4 September, the museum will be closing at 2:00 PM.

The National Cryptologic Museum will be CLOSED on Monday, September 7th through Thursday, September 10th for scheduled maintenance.
We will re-open to the public on Friday, September 11th.

Open Tuesday - Friday (and first Sat of the month)*

10 a.m. to 4 p.m.

FREE Admission

* Please Note - NCM IS CLOSED ON ALL FEDERAL HOLIDAYS

About the Museum

NCM Museum

Tours & Education Programs

Tours & Education Programs

Museum Exhibits

Museum Collection Database

Museum Collection Database

Former President Obama’s mobile devices

News & Highlights

Decoding a Nation: 250 Years of American Secrets

Now on display, the National Cryptologic Museum is highlighting the unlocking of secrets for 250 Years.

New Temporary Exhibit Takes Visitors “Behind the Fenceline”

We’ve all heard the nickname, "No Such Agency." The NSA has been shrouded in mystery since its inception, sometimes...

STEM Fest: Engineering Ideas Into Reality

Join the National Cryptologic Museum for the 10th Annual STEM Fest! Explore a world of discovery where science, technology, engineering and...