| 901 | WOBIG-MORRAINE | Ogemaw County, MI | Oil Property | Mar 2026 |
| 902 | WOJTOWICZ | Arenac County, MI | Oil Property | Mar 2026 |
| 903 | WOLF | Otsego County, MI | Gas Property | Jul 2019 |
| 904 | WOLF, CARL | Otsego County, MI | Oil & Gas Property | Oct 2009 |
| 905 | WOLOHAN EST | Saginaw County, MI | Oil Property | Dec 2025 |
| 906 | WOOD | Crawford County, MI | Oil & Gas Property | Mar 2026 |
| 907 | WRIGHT | Allegan County, MI | Oil Property | Feb 2026 |
| 908 | WURM | Grand Traverse County, MI | Oil & Gas Property | Mar 2026 |
| 909 | WUSSOW | Manistee County, MI | Oil Property | Feb 2026 |
| 910 | WYANT, A C | Midland County, MI | Oil Property | Mar 2026 |
| 911 | WYLIE | Livingston County, MI | Oil Property | Jan 2026 |
| 912 | YAGER | Gladwin County, MI | Oil Property | Feb 2026 |
| 913 | YANKEE | Manistee County, MI | Oil & Gas Property | May 1986 |
| 914 | YAWKEY, T | Arenac County, MI | Oil Property | Dec 2025 |
| 915 | YOUKER | Grand Traverse County, MI | Oil & Gas Property | Jan 2026 |
| 916 | YOUNGS, T | Bay County, MI | Oil Property | Jan 2026 |
| 917 | ZECKZER | Otsego County, MI | Gas Property | Jul 2019 |
| 918 | ZELLMAN | Allegan County, MI | Oil & Gas Property | Feb 2026 |
| 919 | ZIEHM | Manistee County, MI | Oil & Gas Property | May 1985 |
| 920 | ZIELINSKI | Manistee County, MI | Oil & Gas Property | Jun 2023 |
| 921 | ZIMMERMAN | Bay County, MI | Oil Property | Feb 2026 |
| 922 | ZIMMERMAN | Manistee County, MI | Oil & Gas Property | Mar 2026 |
| 923 | ZINK | Mecosta County, MI | Oil & Gas Property | Mar 2026 |
| 924 | ZMIJEWSKI & ZIETLOW ET AL 1-26 | Jackson County, MI | Oil & Gas Property | Feb 2026 |
| 925 | ZOKOE | Ottawa County, MI | Oil & Gas Property | Feb 2026 |
| 926 | ZUIDERVEEN | Missaukee County, MI | Oil & Gas Property | Jan 2026 |