Hydrogen
Cited as one of Washington's Best Workplaces by PSBJ four years in a row.
Hydrogen, a full-service advertising agency, is named after the simplest element in the universe. By harnessing the power of simplicity, our ideas are designed to leave an unforgettable impression on an audience as well as a company's bottom line. Local, regional and international clients include Heritage Bank, Accoya, 365 by Whole Foods Market, Keysight Technologies, Kohler, The Polyclinic, Kenworth Truck Company, Icynene and Windermere Real Estate.
10/02/2026
Our September roundup is here! 🍁 A busy team, time spent volunteering and celebrating 25 years of Hydrogen made this a month to remember 🎉
Project management, but make it This or That! We put our Jr Project Manager, Gretchen, on the spot to share how she likes to keep her projects moving forward.
09/30/2026
Honk honk! It’s always a fun time with the Kenworth Truck Co. crew 🚚
09/23/2026
It was a busy week at Hydrogen! While some of our team was away in Denmark, the rest of our crew spent time volunteering with one of our favorite local organizations, Backpack.Brigade, which works to end child weekend hunger in King county. Thank you for having us! 🎒
09/21/2026
Our crew was all smiles (literally) at the Worldwide Partners conference in Copenhagen! From incredible speakers to enjoying the beautiful scenes of the city, our Hydrogen team left feeling inspired by our new (and old) agency friends.
09/14/2026
A little late night BTS 🎬
09/10/2026
Back to school, Hydrogen edition 🎒📚 Throwing it back to where it all started.
09/04/2026
Tomorrow marks our 25th birthday! 🎉 🎉 We are so grateful for the past two and a half decades and can’t wait to see where we go in the next 25! Cheers to Hydrogen— past, present and future!
09/02/2026
Ever wonder what it takes to run an ad agency in today’s day and age? Check out The Ad Podcast’s recent episode with our very own Mary Knight, where they cover everything from how to build a supportive culture at a remote agency to maintaining long-term relationships with clients. Link in bio to watch the full episode!
08/28/2026
We’re soaking up the last bit of summer with all the extracurriculars ☀️ From team hangs to outdoor hobbies, the crew has really been making the most of it!
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Address
255 S. King Street #800
Seattle, WA
98104
Opening Hours
| Monday | 9am - 5pm |
| Tuesday | 9am - 5pm |
| Wednesday | 9am - 5pm |
| Thursday | 9am - 5pm |
| Friday | 9am - 5pm |
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