Taking over the former Polpo site on New Road, the new regional location will be the group's 14th restaurant, and is expected to launch in June.
The restaurant, which is billed as Tonkotsu's 'first standalone site' outside of London, will hold 50 covers, with space for an additional eight seats outside.
Tonkotsu currently operates 12 restaurants across the capital, as well as a concession in Selfridge’s food hall in Birmingham.
The menu at Tonkotsu Brighton will be broadly similar to that found at the group's other restaurants, and is expected to include the brand’s signature tonkotsu ramen, as well as its chilli chicken ramen; vegan mushroom miso ramen; chicken kara-age; and varieties of gyoza such as classic pork, ginger and garlic, as well as king prawn, and shiitake and ginger.
Tonkotsu was launched in Soho in 2012 by co-founders Ken Yamada and Emma Reynolds, and in 2019 secured a £5m investment from YFM Equity Partners.
At the time Yamada said the partnership would allow the brand to grow and enable them to open a handful more sites.
The group previously also ran high-end Asian concept Anzu in London’s St James’ Market development.