Washington Harbour Partners
Washington Harbour Partners LP is a private investment firm based in Arlington, Virginia, established in 2019. The firm is registered as an investment adviser and manages approximately $4.73 billion in regulatory assets. With a team of 12 to 20 professionals, including 8 investment advisers, Washington Harbour focuses on generating long-term risk-adjusted returns by investing in growth equity, private equity, and public equities, particularly in sectors aligned with U.S. government and defense needs. The firm specializes in lower middle-market and growth-stage companies in areas such as cyber
Investing activity
Washington Harbour Partners appears in 1 AI deal tracked by the AI Lounge deals desk. The rounds are mostly Seed. The most recent is Worldscape.ai (Seed, Mar 2026).
Washington Harbour Partners most often invests alongside Scout Ventures and Radius, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about Washington Harbour Partners
What AI companies has Washington Harbour Partners invested in?
Washington Harbour Partners's AI investments include Worldscape.ai. The 1 round on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Washington Harbour Partners based?
Washington Harbour Partners is based in Arlington, Virginia, United States.
What stage does Washington Harbour Partners invest at?
In the rounds tracked on AI Lounge, Washington Harbour Partners has invested at Seed.
Who does Washington Harbour Partners co-invest with?
Washington Harbour Partners's most frequent co-investors on AI Lounge are Scout Ventures (1 deal) and Radius (1 deal).
How can founders reach Washington Harbour Partners?
Founders on AI Lounge can see Washington Harbour Partners's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with the firm under Warm Paths, and add Washington Harbour Partners to their Investor Pipeline to track the conversation.