Name Coordinates Remarks Mably Island 14°57′3″S 124°52′57″E / 14.95083°S 124.88250°E / -14.95083; 124.88250 (Mably Island ) Mac Mahon Island 16°30′2″S 123°21′42″E / 16.50056°S 123.36167°E / -16.50056; 123.36167 (Mac Mahon Island ) Mackenzie Island 34°11′53″S 122°6′13″E / 34.19806°S 122.10361°E / -34.19806; 122.10361 (Mackenzie Island ) Macleay Island 15°56′41″S 123°41′28″E / 15.94472°S 123.69111°E / -15.94472; 123.69111 (Macleay Island (Western Australia) ) Macleay Islands 15°53′17″S 123°39′19″E / 15.88806°S 123.65528°E / -15.88806; 123.65528 (Macleay Islands ) Malcolm Island 14°31′19″S 125°54′13″E / 14.52194°S 125.90361°E / -14.52194; 125.90361 (Malcolm Island (Western Australia) ) Malup Island 31°44′12″S 115°46′55″E / 31.73667°S 115.78194°E / -31.73667; 115.78194 (Malup Island ) Malus Islands 20°31′8″S 116°40′24″E / 20.51889°S 116.67333°E / -20.51889; 116.67333 (Malus Islands ) Man On Rock Islet 20°23′59″S 115°31′51″E / 20.39972°S 115.53083°E / -20.39972; 115.53083 (Man On Rock Islet ) Mangrove Group 28°52′16″S 113°58′21″E / 28.87111°S 113.97250°E / -28.87111; 113.97250 (Mangrove Group ) Mangrove Islands 21°30′5″S 115°21′15″E / 21.50139°S 115.35417°E / -21.50139; 115.35417 (Mangrove Islands ) Mangrove Point 15°47′58″S 124°38′51″E / 15.79944°S 124.64750°E / -15.79944; 124.64750 (Mangrove Point ) Manicom Island 34°6′49″S 123°1′45″E / 34.11361°S 123.02917°E / -34.11361; 123.02917 (Manicom Island ) Mardie Island 20°57′52″S 115°58′55″E / 20.96444°S 115.98194°E / -20.96444; 115.98194 (Mardie Island ) Maret Island 14°24′35″S 124°58′31″E / 14.40972°S 124.97528°E / -14.40972; 124.97528 (Maret Island ) Maret Islands 14°24′35″S 124°58′31″E / 14.40972°S 124.97528°E / -14.40972; 124.97528 (Maret Islands ) Margaret Island 16°22′30″S 123°23′34″E / 16.37500°S 123.39278°E / -16.37500; 123.39278 (Margaret Island (Western Australia) ) Marigold Island 20°27′33″S 115°33′14″E / 20.45917°S 115.55389°E / -20.45917; 115.55389 (Marigold Island ) Marinula Island 28°28′31″S 113°41′57″E / 28.47528°S 113.69917°E / -28.47528; 113.69917 (Marinula Island ) Marndungum Island 15°55′42″S 124°19′26″E / 15.92833°S 124.32389°E / -15.92833; 124.32389 (Marndungum Island ) Mart Islands 34°0′11″S 122°37′53″E / 34.00306°S 122.63139°E / -34.00306; 122.63139 (Mart Islands ) Mary Anne Group 21°17′47″S 115°29′56″E / 21.29639°S 115.49889°E / -21.29639; 115.49889 (Mary Anne Group ) Mary Anne Island 21°15′48″S 115°27′41″E / 21.26333°S 115.46139°E / -21.26333; 115.46139 (Mary Anne Island ) Mary Anne Island 26°29′6″S 113°40′59″E / 26.48500°S 113.68306°E / -26.48500; 113.68306 (Mary Anne Island ) Mary Durack Island 16°19′41″S 128°41′9″E / 16.32806°S 128.68583°E / -16.32806; 128.68583 (Mary Durack Island ) Mary Island 13°59′49″S 126°22′47″E / 13.99694°S 126.37972°E / -13.99694; 126.37972 (Mary Island ) Mary Island North 17°15′54″S 123°32′43″E / 17.26500°S 123.54528°E / -17.26500; 123.54528 (Mary Island North ) Mary Island South 17°18′37″S 123°32′43″E / 17.31028°S 123.54528°E / -17.31028; 123.54528 (Mary Island South ) Mary Islands 16°22′3″S 123°29′45″E / 16.36750°S 123.49583°E / -16.36750; 123.49583 (Mary Islands ) Mawby Island 20°31′15″S 116°41′34″E / 20.52083°S 116.69278°E / -20.52083; 116.69278 (Mawby Island ) Mcculloch Island 14°56′10″S 124°40′23″E / 14.93611°S 124.67306°E / -14.93611; 124.67306 (Mcculloch Island ) Mcintyre Island 15°59′16″S 123°32′13″E / 15.98778°S 123.53694°E / -15.98778; 123.53694 (Mcintyre Island ) Meade Island 26°0′5″S 113°11′57″E / 26.00139°S 113.19917°E / -26.00139; 113.19917 (Meade Island ) Meeyip Island 32°34′48″S 115°45′49″E / 32.58000°S 115.76361°E / -32.58000; 115.76361 (Meeyip Island ) Melomys Island 16°9′4″S 124°4′48″E / 16.15111°S 124.08000°E / -16.15111; 124.08000 (Melomys Island ) Mermaid Island 16°26′1″S 123°21′3″E / 16.43361°S 123.35083°E / -16.43361; 123.35083 (Mermaid Island ) Miawaja Island 15°12′52″S 124°24′38″E / 15.21444°S 124.41056°E / -15.21444; 124.41056 (Miawaja Island ) Michaelmas Island 35°2′39″S 118°2′9″E / 35.04417°S 118.03583°E / -35.04417; 118.03583 (Michaelmas Island ) Mictyis Island 15°12′39″S 124°47′53″E / 15.21083°S 124.79806°E / -15.21083; 124.79806 (Mictyis Island ) Mid Lyons Island 25°2′8″S 115°8′23″E / 25.03556°S 115.13972°E / -25.03556; 115.13972 (Mid Lyons Island ) Middle Island 16°26′55″S 123°5′2″E / 16.44861°S 123.08389°E / -16.44861; 123.08389 (Middle Island (Western Australia) ) Middle Island 16°51′29″S 122°8′13″E / 16.85806°S 122.13694°E / -16.85806; 122.13694 (Middle Island (Lacepede Islands) ) Middle Island 20°54′31″S 115°19′36″E / 20.90861°S 115.32667°E / -20.90861; 115.32667 (Middle Island (Western Australia) ) Middle Island 34°6′4″S 123°11′20″E / 34.10111°S 123.18889°E / -34.10111; 123.18889 (Middle Island (Western Australia) ) Middle Island 28°54′31″S 113°54′36″E / 28.90861°S 113.91000°E / -28.90861; 113.91000 (Middle Island (Western Australia) ) Middle Mangrove Island 21°28′47″S 115°21′11″E / 21.47972°S 115.35306°E / -21.47972; 115.35306 (Middle Mangrove Island ) Middle Mary Anne Island 21°17′36″S 115°34′14″E / 21.29333°S 115.57056°E / -21.29333; 115.57056 (Middle Mary Anne Island ) Middle Osborn Island 14°19′36″S 126°0′20″E / 14.32667°S 126.00556°E / -14.32667; 126.00556 (Middle Osborn Island ) Middle Passage Island 21°2′58″S 115°50′16″E / 21.04944°S 115.83778°E / -21.04944; 115.83778 (Middle Passage Island ) Midway Island 15°16′57″S 124°52′0″E / 15.28250°S 124.86667°E / -15.28250; 124.86667 (Midway Island (Western Australia) ) Migo Island 35°4′20″S 117°38′48″E / 35.07222°S 117.64667°E / -35.07222; 117.64667 (Migo Island ) Miles Island (Western Australia) 34°4′4″S 123°13′53″E / 34.06778°S 123.23139°E / -34.06778; 123.23139 (Miles Island ) Milligan Island 30°2′16″S 114°57′18″E / 30.03778°S 114.95500°E / -30.03778; 114.95500 (Milligan Island ) Mistaken Island 20°39′19″S 116°39′42″E / 20.65528°S 116.66167°E / -20.65528; 116.66167 (Mistaken Island ) Mistaken Island 35°3′49″S 117°56′34″E / 35.06361°S 117.94278°E / -35.06361; 117.94278 (Mistaken Island ) Molema Island 16°15′37″S 123°54′10″E / 16.26028°S 123.90278°E / -16.26028; 123.90278 (Molema Island ) Moliere Island 14°13′46″S 125°49′33″E / 14.22944°S 125.82583°E / -14.22944; 125.82583 (Moliere Island ) Molloy Island 34°16′9″S 115°12′26″E / 34.26917°S 115.20722°E / -34.26917; 115.20722 (Molloy Island ) Mondrain Island 34°8′14″S 122°14′43″E / 34.13722°S 122.24528°E / -34.13722; 122.24528 (Mondrain Island ) Monge Island (Western Australia) 14°12′30″S 125°36′30″E / 14.20833°S 125.60833°E / -14.20833; 125.60833 (Monge Island ) Monsmont Island 16°17′50″S 128°42′0″E / 16.29722°S 128.70000°E / -16.29722; 128.70000 (Monsmont Island ) Montebello Islands 20°26′10″S 115°31′41″E / 20.43611°S 115.52806°E / -20.43611; 115.52806 (Montebello Islands ) An archipelago of around 174 small islands Montesquieu Islands 14°6′15″S 125°43′54″E / 14.10417°S 125.73167°E / -14.10417; 125.73167 (Montesquieu Islands ) Montgomery Islands 15°57′38″S 124°12′18″E / 15.96056°S 124.20500°E / -15.96056; 124.20500 (Montgomery Islands ) Morley Island 28°44′47″S 113°48′45″E / 28.74639°S 113.81250°E / -28.74639; 113.81250 (Morley Island ) Morrisey Island 16°31′46″S 123°24′33″E / 16.52944°S 123.40917°E / -16.52944; 123.40917 (Morrisey Island ) Muddle Islands 16°23′12″S 123°26′29″E / 16.38667°S 123.44139°E / -16.38667; 123.44139 (Muddle Islands ) Muir Island 16°3′39″S 124°2′8″E / 16.06083°S 124.03556°E / -16.06083; 124.03556 (Muir Island (Western Australia) ) Muiron Islands 21°40′8″S 114°20′32″E / 21.66889°S 114.34222°E / -21.66889; 114.34222 (Muiron Islands ) Mulgudna Island 16°3′14″S 124°18′20″E / 16.05389°S 124.30556°E / -16.05389; 124.30556 (Mulgudna Island ) Murrangingi Island 14°21′31″S 125°34′38″E / 14.35861°S 125.57722°E / -14.35861; 125.57722 (Murrangingi Island ) Murrara Island 14°59′41″S 125°14′27″E / 14.99472°S 125.24083°E / -14.99472; 125.24083 (Murrara Island ) Murray Island 28°53′53″S 113°53′47″E / 28.89806°S 113.89639°E / -28.89806; 113.89639 (Murray Island (Western Australia) ) Museums Island (Western Australia) 14°56′57″S 124°45′8″E / 14.94917°S 124.75222°E / -14.94917; 124.75222 (Museums Island ) Mushroom Island (Western Australia) 20°43′26″S 115°28′56″E / 20.72389°S 115.48222°E / -20.72389; 115.48222 (Mushroom Island ) Myres Island 14°34′28″S 125°53′12″E / 14.57444°S 125.88667°E / -14.57444; 125.88667 (Myres Island )