JBSC

JET Boston

JKA Revere Athletic Club

JP Centre Yoga

Jazzercise

José Mateo Ballet Theatre

K Foley Global Pilates

Kaivalya Bodywork

Kaliyuga Dance Studios

Katana Spa

Kinema Fitness - 55 Fitness

Kinema Fitness - One Post Office Square

Kinema Fitness - Rowes Wharf Health Club

Kinema Fitness - SharkNinja

Kinema Fitness - Wolverine Worldwide (MA)

Kinetic Dance Studio

Kink Pilates

Knights Of Columbus - Newton

LEVO

LIFE Health and Fitness Center

LS Flamenco

Laughing Dog Yoga Studio

Lea Tam Acupuncture

Level Ground Mixed Martial Arts