Companies catalogue
- M. L. Roxas Elementary School, Bulan
- M. Lhuillier - Gubat, Gubat
- M. Lhuillier - Masbate 2, Masbate City
- M. Lhuillier - Pilar, Pilar
- M.G. De Castro Elementary School, Bulan
- MCL Construction Supply, Santa Barbara
- MG Hotel, Masbate City
- MX Memoxpress, San Fernando
- Maalo Elementary School, Juban
- Mabayawas Elementary School, Libon
- Mabini Elementary School, Donsol
- Mabini Elementary School, Casiguran
- Mabiton Elementary School, Claveria
- Mabuhay Elementary School, Mobo
- Macabog Barangay Hall, Aroroy
- Macalindong Elementary School, Ligao
- Macarthur Elementary School, Masbate
- Macasitas Elementary School, Pio Duran
- Madancalan Primary School, Baleno
- Magallanes National High School, Magallanes
- Magcaraguit Elementary School, Dimasalang
- Magdalena Elementary School, Baleno
- Magdalena National High School, Baleno
- Maglambong Elementary School, Monreal
- Magsalangi Elementary School, Milagros
- Magtangob Lodge, Bulan
- Maihao Elementary School, Cawayan
- Maingaran Elementary School, Masbate City
- Maipon Elementary School, Guinobatan
- Maipon Elementary School, Guinobatan
- Malabanan Septic Tank Siphoning Services, Masbate City
- Malapay High School, Pio Duran
- Malapoc Elementary School, Donsol
- Malbug National High School, Cawayan
- Malinao Elementary School, Donsol
- Malipo Elementary School, Guinobatan
- Malobago Elementary School, Guinobatan
- Mambajog Elementary School, Matnog
- Mamlad Elementary School, Jovellar
- Mamlad Elementary School, Pio Duran
- Mamlad National High School, Jovellar
- Manapao Elementary School, Sorsogon City
- Maninila Elementary School, Guinobatan
- Manjumlad Elementary School, Matnog
- Manoboc Elementary School, Baleno
- Manuel Andaya Bustamante High School (Formerly Cagmanaba High School), Oas
- Manuel T. Sia Memorial High School, Pilar
- Maogog Elementary School, Jovellar
- Mapaso Elementary School, Irosin
- Maramba National High School - Cagmanaba High School, Oas
- Marcelo A. Anonuevo Memorial High School, Cataingan
- Marcelo Ramos Rice Store & General Merchandize, Urdaneta City
- Marcial O. Ranola Mem. High School, Guinobatan
- Marinab Elementary School, Bulan
- Marintoc National High School, Mobo
- Mariposa Barangay Hall, Aroroy
- Mary Perpetua E. Brioso Memorial High School, Milagros
- Masbate Central Technical Institute, Masbate City
- Masbate City Hall, Masbate City
- Masbate Coast Guard Station, Masbate City
- Masbate Colleges - San Fernando High School, San Fernando
- Masbate Lodge, Masbate City
- Masbate Taekwondo Association, Masbate City
- Mataba Barangay Hall, Aroroy
- Matagangtang National High School, Placer
- Matagbac Elementary School, Milagros
- Matanglad Elementary School, Milagros
- Matiporon Elementary School, Milagros
- Matnog Adventist Elementary School, Matnog
- Matnog Central School, Matnog
- Matnog Central School, Matnog
- Mayag Elementary School, Oas
- Mayor Tomas V. Rivera Memorial High School, Cawayan
- Medalla Milagrosa Elementary School, Jovellar
- Mega East Properties, Inc, Tarlac City
- Melchor B. Burlaos Memorial High School, Milagros
- Meming Gift Shop, Bayambang
- Mercury Drug Corporation, Bulan
- Mercury Drug Store - Masbate Tara Branch, Masbate City
- Metro Department Store, Angeles
- Miaga Funeral Service, Uson
- Milagros National High School, Milagros
- Milestey Surplus, Mabalacat
- Mintac Elementary School, Cataingan
- Minute Burger Makiling, Calamba
- Mobo National High School, Mobo
- Moises R. Elementary Schoolpinosa Elementary School, Milagros
- Monbon Elementary School, Irosin
- MoneyGram, Lungsod ng Masbate
- MoneyGram, Masbate City
- Mongolbongol National High School, San Vicente
- Monreal National High School, Monrea
- Monreal Police Station, Monreal
- Morning Dew Bar & Restaurant, Masbate City
- Morocborocan Elementary School, Monreal
- Motortrade Multi Brand - Aroroy, Aroroy
- Motortrade Multi Brand - Dimasalang, Dimasalang
- Motortrade Multi Brand - Uson, Uson
- Muladbucad Grande Elementary School, Ligao
- Municipality of Aroroy, Aroroy