Higher Ground Fitness

Hill House

Inclusive Fitness

InnerCity Weightlifting

Institute of Combative Arts Quincy

Instrumental Yoga

JET Boston

JP Centre Yoga

Jacked Performance

Jean Appolon Expressions

Jenn Weldon Pilates & Fitness

Josh Mavilia Fitness

José Mateo Ballet Theatre

Joy of Yoga

K Foley Global Pilates

KAIZEN

KRIGSMAN

Kaliyuga Dance Studios

Kinema Fitness - 260 Franklin

Kinema Fitness - One Post Office Square

Kinema Fitness - Rowes Wharf Health Club

Kinetic Synergy Dance Company

Knights Of Columbus - Newton

LIFE Health and Fitness Center