Reykjavík-based legal tech startup Jónsbók has secured an investment from early-stage venture capital firms Crowberry Capital and Leo Capital to accelerate product development and expand across Europe. Jónsbók provides an AI-powered legal platform that helps lawyers and legal professionals conduct jurisdiction-specific legal research, draft documents and emails, analyse large volumes of documents, and assess legal positions with references to relevant legal sources. The company will use the investment to strengthen its presence in existing markets and bring its platform to more legal professionals across Europe. The investors did not disclose the investment amount.
Jónsbók develops an AI-powered platform for lawyers and legal professionals. Its tools support legal research, document and email drafting, analysis of large document collections, and assessment of legal positions using references to relevant legal sources. The platform is designed to account for differences in national laws, languages and legal practices, and is used by law firms, public institutions, financial institutions and insurance companies across seven markets in the Nordics and Central and Eastern Europe.
“Every jurisdiction has its own laws, language and legal practices, and we believe legal AI needs to reflect that reality. We’ve built Jónsbók with that challenge at its core, combining advanced AI technology with accurate, locally grounded legal research. Having Crowberry and Leo Capital join us on this journey will allow us to accelerate product development and bring Jónsbók to more legal professionals across Europe,” says Bjarni Bragi Jónsson, CEO and Co-founder of Jónsbók.
Jónsbók launched its platform in Iceland in 2025 before expanding into European markets in early 2026. The company focuses on legal AI tools that account for differences in national legislation, languages and legal practices, rather than relying on generic AI systems that may not reflect local legal requirements.
“Our growth across European markets has reinforced something we’ve believed from the beginning: happy users are our strongest advocates. Seeing not only our customer base grow, but also how deeply customers are engaging with Jónsbók, is particularly encouraging. Word of mouth has been an important driver of our growth, and this investment will help us build on that momentum, strengthen our presence in existing markets and bring Jónsbók to more legal professionals across Europe,” states Thelma Christel Kristjánsdóttir, CCO and co-founder of Jónsbók.
Its platform supports a range of legal workflows, including legal research, drafting documents and emails, reviewing hundreds of documents simultaneously, and assessing legal positions with references to relevant legal sources. Its customers include law firms, in-house legal teams, public institutions, banks and insurance companies.
Since expanding beyond Iceland, Jónsbók has gained traction across the Nordics, the Baltics and Central and Eastern Europe. Finland has become an important market for the company, where it has built a growing local team and customer base.
The new investment will support further product development and expansion into additional European markets. Jónsbók also plans to build on its existing customer relationships and strengthen its position in markets where it already operates.
Crowberry Capital, an early-stage venture capital firm focused on technology companies across the Nordics, and Leo Capital, a cross-continental venture fund headquartered in Singapore and Helsinki, are backing Jónsbók as it scales its platform internationally.
“As early stage investors the team is the core of our investment decisions. We have continually been impressed by the Jónsbók team. The team has in-depth understanding of how to address the AI needs of the legal market and have been quick to execute on their vision to make quality legal research efficient and accurate,” comments Helga Valfells, General and Founding Partner, Crowberry Capital.
The investors pointed to the team’s combination of engineering capabilities and legal expertise as a factor behind their support. Leo Capital partner Henry Goodwin highlighted the importance of AI tools that reflect local laws and languages, while Crowberry Capital general and founding partner Helga Valfells cited the team’s understanding of the legal sector’s needs and its progress in developing legal research technology.
“Buyers of legal technology have become far more sophisticated and are now looking beyond generic tools. Jónsbók combines engineering excellence with genuine legal expertise to deliver AI-powered legal work grounded in local law and language. With customers across multiple European markets and a growing pipeline spanning several more countries, the team is already demonstrating how well this model can scale across jurisdictions. We are delighted to be partnering with them,” says Henry Goodwin, Partner Leo Capital.
The investment will help them improve the platform and make it available to more legal professionals across Europe. The company also attributes part of its growth to customer recommendations and repeat engagement with its product.