Pslondon, founded in 2007, will be tasked with creating a new brand identity and marketing campaign for the 118-year-old racecourse.
The creative agency pitched the idea "The finishing post is just the beginning", which Lingfield Park said illustrated its desire to be more than just a racetrack.
Pslondon's brief is to create a full range of campaigns and communications to promote the venue, which also features a golf course. A flagship hotel is about to be built on site and is scheduled to open in 2009.
Tony Speight, pslondon's creative partner, said: "Lingfield Park is an established brand with a fantastic future and we are delighted to be working with them to welcome existing customers and drive the programme to deliver a new generation of users of their facilities."
Lingfield Park's strategy is to cement its position as the busiest racecourse in Europe, hosting more than 90 meetings a year, and increase its use for corporate events.
Kimberley Green, Lingfield Park marketing manager, said: "It was clear from the start that Pslondon were the right choice for us.
"They showed us that they had real passion for what we do, they developed stunning creative designs and a campaign line that was exactly what we were looking for."