The grant, from the Holland-based Doen Foundation, will also include a training project which will see Fifteen's chefs join the MSC to create training and promotional support to the food service industry on certification.
Andrew Parkinson, executive head chef at Fifteen London, said: "We're passionate about using the best possible ingredients, and wherever possible ingredients that are sourced in a sustainable way.
"This year UK consumers have been made even more aware of the issues around our supply of fish and we are pleased to be able to show our commitment to sustainable fishing with our partnership with the MSC."
The four restaurants, in London, Cornwall, Amsterdam and Melbourne, will commit to putting MSC fish on the menu at least once a month once the certification is in place.
Fish carrying the MSC eco label can be traced back to the independently certified fishery that caught them. The MSC's fishery certification programme recognises and rewards sustainable fishing by creating market demand for MSC eco-labelled seafood, encouraging people to look for the MSC logo on seafood in shops and restaurants.
Laura Stewart, foodservice manager for the MSC said: "The combination of funding from Doen and the Fifteen Foundation's expertise and experience will mean we can produce some fantastic materials for training chefs together.
"With Fifteen's additional commitment to training the next generation of chefs, we hope to make an even greater impact on the food service industry in the future."
Fifteen's flagship restaurant in London aims to kick start promotion of MSC in the UK in September followed by Cornwall in October.
It will also be involved in the MSC's Sustainable Seafood Lunch on 30th September.
By Janie Stamford
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