Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Archived Challenges

Archived challenges are no longer accepting submissions and are included for historical purposes only. Currently we are displaying recently closed challenges through 2016. Additional challenges will be included at a future date.

See a Bloom, Give it Room – Harmful Algal Bloom Video Challenge

Environmental Protection Agency

Closed On: 01/03/2020 11:00 PM

FAA Challenge - Smart Airport Student Competition

Department of Transportation - Federal Aviation Administration

Closed On: 01/13/2020 11:59 PM

Rust Busters Challenge

Department of the Interior - Bureau of Reclamation

Closed On: 01/16/2020 08:00 PM

Veterans' Employment Challenge

Department of Labor

Closed On: 01/24/2020 5:00 PM

Ocean Observing Prize

Department of Energy

Closed On: 02/12/2020 11:59 p.m.

2020 REACH Lark Award

Department of Health and Human Services - Centers for Disease Control and Prevention

Closed On: 02/14/2020 11:59 PM

An Inclusive Talent Pipeline for American Businesses

Department of Health and Human Services

Closed On: 02/14/2020 11:59 PM

EmPOWER Air Data Challenge

Environmental Protection Agency

Closed On: 03/02/2020 11:59 PM

Waves to Water Prize

Department of Energy - Office of Energy Efficiency & Renewable Energy

Closed On: 03/13/2020 11:59 PM

Marine Corps Ground Sensors Challenge

Department of Defense - U.S. Marine Corps

Closed On: 03/15/2020 11:59 PM ET

National Guard Innovation Competition - Round 1

Department of Defense - National Guard Bureau

Closed On: 03/16/2020 11:59 PM ET

Pandemic Response Hackathon

Department of Health and Human Services - Office of the National Coordination for Health Information Technology

Closed On: 03/29/2020 3:00 PM

xTechSearch 5

Department of Defense - U.S. Army

Closed On: 04/01/2020 02:59 AM