Ship Builders
Miho Zosensho
- Shimizu, Japan
James N. Miller & Sons
- St. Monans and Methil, United Kingdom
Miller (Methil)
- St. Monans and Methil, United Kingdom
Van Mill Scheepswerf & Machinefabriek
- Hardinxveld, Netherlands
Minami-Nippon Zosen
- Usuki, Japan
Mitsubishi Heavy Industries
- Hiroshima, Kobe, Nagasaki and Shimonoseki, Japan
Mitsui Engineering & Shipbuilding Co.
- Chiba, Ichihara, Osaka and Tamano, Japan
Mitsui Ocean Development & Engineering Co.
- Tokyo, Japan
Mjellem og Karlsen
- Laksevåg, Bergen, Norway
Modest Infrastructure
- Bhavnagar, India
Moen Slip
- Kolvereid, Norway
Mokpo Shipbuilding & Engineering
- Mokpo, South Korea
Estaleiros Navais do Mondego
- Figueira da Foz, Portugal
Montrose Marine
- Montrose, United Kingdom
Cantiere Navale Mario Morini
- Ancona, Italy
Moss Point Marine
- Escatawpa, Ms, United States of America
Moss Rosenberg Verft
- Moss, Norway
MTW Schiffswerft
- Wismar, Germany
Mützelfeldtwerft
- Cuxhaven and Stade, Germany
Murakami Hide Zosen
- Hakata, Japan
Astilleros de Murueta
- Guernica, Spain
Maritima del Musel
- Gijon, Spain
Mustang Marine
- Pembroke Dock, United Kingdom
MWB Motorenwerk Bremerhaven
- Bremerhaven, Germany
Myklebust Mekaniske Verksted
- Gursken, Norway
VEB Mathias-Thesen-Werft
- Wismar, Germany