Contemporary Izakaya & Japanese Dining Destination


Our restaurant, located on Mayfair’s prominent Grosvenor Street, is inspired by the nature-spirited roots and duality of Mount Fuji, honouring Japanese traditions and culinary craftsmanship.

KOYN Japanese

Executive Chef Rhys Cattermoul showcases a broad spectrum of Japanese cuisine through delicate umami flavours and responsibly sourced ingredients.

Discover KOYN signatures alongside classic favourites from our sushi bar, robata and kitchen.

KOYN Bulletin


Stay up to date with what’s unfolding soon.

OPENING HOURS

RESTAURANT

KOYN JAPANESE
Monday to Sunday
Lunch: 12:00 – 14.30

Monday to Saturday
Dinner: 17:30 – 22:30

Sunday
Dinner: 17:30 – 21:30

KOYN THAI
Opening 16th June

Tuesday to Thursday
Lunch: 12:00 – 14:30

Monday to Saturday
Dinner: 17:30 – 22:30

Sunday
Dinner: 17:30 – 21:30

BAR

Monday to Sunday
17:30 - 00:00