WPP-owned Mindshare won the consolidated global account after a review that began at the end of last year.
Previously, Dyson worked with a range of agencies, including PHD in the UK and UM in the US, but the brand wanted to appoint a single network to the business.
Sarah Stevens, the senior category specialist at Dyson, handled the review, which was led out of Dyson’s UK headquarters in Wiltshire.
Nick Emery, global chief executive of Mindshare, said: "Dyson is an ingenious technology company with huge ambitions. It’s a privilege to be selected to partner with them worldwide."
Dyson has handled its creative work in-house since 2007, when it split from VCCP.
Sir James Dyson founded Dyson in 1993, and the company sells products in 67 markets and employs 4,400 people worldwide.