| 101 | MCCUE 2 | Campbell County, WY | Gas Property | Aug 2009 |
| 102 | MCCULLEN | Sweetwater County, WY | Oil & Gas Property | Jun 2026 |
| 103 | MCCULLOUGH | Campbell County, WY | Oil & Gas Property | Jun 2026 |
| 104 | MCCULLOUGH | Weston County, WY | Oil Property | Feb 2016 |
| 105 | MCDERMOTT | Sweetwater County, WY | Oil & Gas Property | Jun 2026 |
| 106 | MCDONALD DR | Sublette County, WY | Oil & Gas Property | Mar 2023 |
| 107 | MCGAHAN FARMS | Laramie County, WY | Oil & Gas Property | Jul 2026 |
| 108 | MCGEE FED 264472 | Campbell County, WY | Oil & Gas Property | Jul 2026 |
| 109 | MCKEAN | Crook County, WY | Oil Property | Sep 2024 |
| 110 | MCKENZIE | Campbell County, WY | Oil & Gas Property | Oct 2016 |
| 111 | MCMAHON | Park County, WY | Oil & Gas Property | Jul 2026 |
| 112 | MCMAHON PATENTED | Park County, WY | Oil & Gas Property | Jul 2026 |
| 113 | MCMILLAN | Campbell County, WY | Oil & Gas Property | Sep 2024 |
| 114 | MCNAMARA | Sweetwater County, WY | Oil & Gas Property | Jun 2026 |
| 115 | MCNEIL | Converse County, WY | Oil Property | Nov 1980 |
| 116 | MCPARTLIN CS | Campbell County, WY | Gas Property | Sep 2016 |
| 117 | MCPHERSON SPRINGS | Sweetwater County, WY | Oil & Gas Property | Feb 2024 |
| 118 | MCQUILLEN FEDERAL | Weston County, WY | Oil & Gas Property | May 2025 |
| 119 | MCWILLIAMS 1 | Laramie County, WY | Oil & Gas Property | Jul 2026 |
| 120 | MCWILLIAMS 16-63-22 | Laramie County, WY | Oil & Gas Property | Jul 2026 |
| 121 | MDU 1 | Fremont County, WY | Oil & Gas Property | Jul 2026 |
| 122 | MDU 2 | Fremont County, WY | Oil & Gas Property | Jul 2026 |
| 123 | MDU 3 | Fremont County, WY | Oil & Gas Property | Jul 2026 |
| 124 | MDU 4 | Fremont County, WY | Oil & Gas Property | Jul 2026 |
| 125 | MDU 5 | Fremont County, WY | Oil & Gas Property | Jul 2026 |
| 126 | MDU 5 | Fremont County, WY | Oil & Gas Property | Dec 2021 |
| 127 | MDU 6 | Fremont County, WY | Oil & Gas Property | Jul 2026 |
| 128 | MDU 7 | Fremont County, WY | Oil & Gas Property | Jul 2026 |
| 129 | MDU 9 | Fremont County, WY | Oil & Gas Property | Jul 2026 |
| 130 | MEADOW CREEK | Johnson County, WY | Oil & Gas Property | Jul 2026 |
| 131 | MEATLOAF FED 3571-27 | Converse County, WY | Oil & Gas Property | Jun 2026 |
| 132 | MEEK CS | Campbell County, WY | Gas Property | Oct 2019 |
| 133 | MEETEETSE | Park County, WY | Oil & Gas Property | Jul 2026 |
| 134 | MEETEETSE | Hot Springs County, WY | Oil & Gas Property | Jul 2026 |
| 135 | MEHL | Johnson County, WY | Gas Property | Jun 2026 |
| 136 | MELLOT RANCH | Crook County, WY | Oil Property | Jul 2026 |
| 137 | MELLOTT | Crook County, WY | Oil & Gas Property | Jul 2026 |
| 138 | MELLOTT RANCH | Crook County, WY | Oil Property | Jul 2026 |
| 139 | MENG | Niobrara County, WY | Oil Property | Oct 2009 |
| 140 | MENGER | Big Horn County, WY | Oil Property | Jan 2019 |
| 141 | MERIWETHER 4470-0508-1TH | Campbell County, WY | Oil & Gas Property | Jun 2026 |
| 142 | MERRY WIDOW | Hot Springs County, WY | Oil & Gas Property | Oct 2015 |
| 143 | MESA | Sublette County, WY | Oil & Gas Property | Jun 2026 |
| 144 | MESA | Sweetwater County, WY | Oil & Gas Property | Jul 2026 |
| 145 | MESA FEDERAL | Sweetwater County, WY | Oil & Gas Property | Jul 2026 |
| 146 | MESA UNIT | Sublette County, WY | Oil & Gas Property | Jun 2026 |
| 147 | MESERVE | Campbell County, WY | Oil & Gas Property | Feb 2023 |
| 148 | MESSENGER 1-3H | Laramie County, WY | Oil & Gas Property | Jun 2026 |
| 149 | MESSERSCHMITT CS FED | Campbell County, WY | Gas Property | Jan 2013 |
| 150 | METHENY | Campbell County, WY | Gas Property | Nov 2013 |
| 151 | MEXICAN | Sweetwater County, WY | Oil & Gas Property | Jun 2026 |
| 152 | MEXICAN FLATS | Carbon County, WY | Oil & Gas Property | Jun 2026 |
| 153 | MEXICAN FLATS | Carbon County, WY | Oil & Gas Property | Jun 2026 |
| 154 | MEYER C | Crook County, WY | Oil & Gas Property | Jul 2026 |
| 155 | MFS FEDERAL 22 | Carbon County, WY | Oil & Gas Property | Jun 2026 |
| 156 | MFT BOBA FETT FEE 44-18 38-73MBH | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 157 | MICELI | Sweetwater County, WY | Oil & Gas Property | Aug 2018 |
| 158 | MICHAELS | Weston County, WY | Oil Property | Jul 2008 |
| 159 | MICKELSON CREEK | Sublette County, WY | Oil & Gas Property | Jun 2026 |
| 160 | MIDDAUGH | Converse County, WY | Oil Property | Apr 2015 |
| 161 | MIDDLE PINEY | Sublette County, WY | Oil & Gas Property | Jul 2026 |
| 162 | MIDDLE PRONG CS | Campbell County, WY | Gas Property | Sep 2018 |
| 163 | MIDGE FED 4171-36 | Converse County, WY | Oil & Gas Property | Jun 2026 |
| 164 | MIDLAND | Natrona County, WY | Oil Property | May 2023 |
| 165 | MIDWAY | Natrona County, WY | Oil & Gas Property | Oct 2024 |
| 166 | MIDWAY 4570-2932-1TH | Campbell County, WY | Oil & Gas Property | Jun 2026 |
| 167 | MIDWEST | Natrona County, WY | Oil Property | Jul 2026 |
| 168 | MIKE C | Campbell County, WY | Gas Property | Dec 2019 |
| 169 | MILL IRON | Campbell County, WY | Gas Property | Oct 2006 |
| 170 | MILL IRON | Hot Springs County, WY | Oil & Gas Property | Jul 2026 |
| 171 | MILL TRUST | Niobrara County, WY | Oil & Gas Property | Jun 2017 |
| 172 | MILL-GILLETTE | Campbell County, WY | Oil & Gas Property | Dec 2008 |
| 173 | MILLER | Lincoln County, WY | Oil & Gas Property | Jun 2026 |
| 174 | MILLER | Campbell County, WY | Oil Property | Jul 2026 |
| 175 | MILLER FEDERAL | Crook County, WY | Oil Property | Apr 2026 |
| 176 | MILLHOUSE | Weston County, WY | Oil & Gas Property | Dec 1992 |
| 177 | MILLIS WIU | Uinta County, WY | Oil & Gas Property | Mar 2026 |
| 178 | MILLS | Natrona County, WY | Oil & Gas Property | Nov 2018 |
| 179 | MILLS | Campbell County, WY | Oil & Gas Property | Jun 2026 |
| 180 | MILLS FEDERAL | Campbell County, WY | Gas Property | Nov 2011 |
| 181 | MILNE | Campbell County, WY | Gas Property | Oct 2010 |
| 182 | MINT FED 3572-1604 | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 183 | MINTON | Sublette County, WY | Oil & Gas Property | Jun 2026 |
| 184 | MIRACLE MILE 34-27 1SH | Johnson County, WY | Oil & Gas Property | Jun 2026 |
| 185 | MIRAMAR | Crook County, WY | Oil Property | Dec 2018 |
| 186 | MISCHKE | Sheridan County, WY | Gas Property | Mar 2012 |
| 187 | MISCHLER BADGER | Big Horn County, WY | Oil & Gas Property | Jul 2026 |
| 188 | MISTY MOON LAKE 3874-17-20-1NH | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 189 | MIZE | Weston County, WY | Oil & Gas Property | Oct 2005 |
| 190 | MLT FED | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 191 | MNLS SD UT | Campbell County, WY | Oil & Gas Property | Jul 2026 |
| 192 | MOFFIT & PARKS | Campbell County, WY | Gas Property | Dec 2011 |
| 193 | MOFFITT FE | Campbell County, WY | Gas Property | Jun 2013 |
| 194 | MOFFITT-PARKS | Campbell County, WY | Gas Property | May 2012 |
| 195 | MOHAWK | Weston County, WY | Oil & Gas Property | May 2017 |
| 196 | MOHR | Converse County, WY | Oil & Gas Property | May 2026 |
| 197 | MOHR | Converse County, WY | Oil & Gas Property | Jun 2026 |
| 198 | MOJAVE | Johnson County, WY | Oil & Gas Property | Jul 2026 |
| 199 | MOJAVE | Johnson County, WY | Oil & Gas Property | Jul 2026 |
| 200 | MOJAVE FEE 4378 | Johnson County, WY | Oil & Gas Property | Feb 2015 |