| Name |
| Gender |
Life dates |
Work dates |
Life city |
Work city |
Life state |
Life country |
Work state |
Work country |
| Lawrence McConaha |
| male | 1894-1962 | 20th Century | Centerville | Richmond | IN | US | IN | US |
| Clifton M. McChesney |
| male | 1929-2011 | 20th Century | Gary | Williiamston, MI | IN | US | IN | US |
| Henrik Martin Mayer |
| male | 1908-1972 | | Nashua | Indianapolis | NH | US | IN | US |
| Mrs. Hendrik Martin Mayer |
| female | | 20th Century | Indianapolis | | IN | US | IN | US |
| Jessie Hull Mayer |
| female | 1910-2009 | 20th Century | New Haven | Indianapolis | IN | US | IN | US |
| Catherine Morrison Mattison |
| female | 1905-1961 | 20th Century | New Haven | Indianapolis | IN | US | IN | US |
| Donald M. Mattison |
| male | 1905-1975 | 20th Century | Indianapolis | Indianapolis | IN | US | IN | US |
| Retta T. (Mathews) Matthews |
| female | 1856-1899 | 19th Century | Arlington | | IN | US | IN | US |
| Neil Matthew |
| male | | | Tuscon | | AZ | US | IN | US |
| Michael Matherly |
| male | | | Cambridge City | | | US | IN | US |
| S.P. Mast |
| | 20th Century | Kokomo | | IN | US | IN | US |
| Karl Martz |
| male | 1912-1997 | 1931-1997 | Nashville | Bloomington | IN | US | IN | US |
| Loretta March Martin |
| female | 1933- | 20th Century | Plymouth | | IN | US | IN | US |
| John P. Marsh |
| male | 1886-1939 | | Bloomington | Indianapolis | IN | US | IN | US |
| Susan R. Marsh |
| female | | 20th Century | Muncie | | IN | US | IN | US |
| Ruth Bassett Marsh |
| female | 1908- | 20th Century | Anderson | | IN | US | IN | US |
| Jean P. Marsh |
| female | 1910- | 20th Century | Mason City | | IA | US | IN | US |
| J.E. Marsh |
| | 20th Century | Muncie | | IN | US | IN | US |
| Alexis Many |
| male | 1879-1937 | | Indianapolis | | IN | US | IN | US |
| William Majors |
| male | 1930- | 20th Century | Indianapolis | | IN | US | IN | US |
