Jacob Louis de Geer (born August 1975) is a Swedish entrepreneur. He is best known as the co-founder and CEO of financial technology company Zettle.^[1]

De Geer grew up in Stora Wäsby Castle in Upplands Väsby, Sweden. His father, Carl de Geer, was a banker and his mother Christina worked as a teacher.^[2]

De Geer graduated with a Master of Science in Business Administration from the Stockholm School of Economics in 1999.^[3]

In 1999, de Geer became the first employee of TradeDoubler, a digital marketing company founded by Martin Lorentzon.^[4][1][5]

In 2007, de Geer left TradeDoubler and co-founded a media agency, Tre Kronor, and film sharing service, Ameibo. He sold both companies in 2010.^[2]>^[6][5]

In 2010, de Geer co-founded financial technology company Zettle, a producer of mini chip card readers and software for mobile devices.^[7] He came up with the idea for Zettle after his ex-wife, a sunglasses importer, lost out on business at a trade fair after being unable to process card payments for customers.^[8][1]

In 2018, de Geer sold Zettle to PayPal for $2.2 billion.^[3][9] De Geer continues to operate as Zettle's CEO in their head office in Stockholm, Sweden.^[9]