| Frank G. | Matero | Historic Preservation | Professor of Architecture and Acting Chair |
| Randall F. | Mason | Historic Preservation | Associate Professor and Chair |
| Gabriel | Martinez | Fine Arts | Senior Lecturer, Photography |
| Muscoe | Martin | Architecture | Lecturer |
| Virgil | Marti | Fine Arts | Lecturer |
| Douglas | Martenson | Fine Arts | Lecturer, Drawing |
| Sandro | Marpillero | Landscape Architecture | Lecturer |
| Stuart | Mardeusz | Architecture | Lecturer |
| Christopher | Marcinkoski | Landscape Architecture | Assistant Professor |
| Tina | Manis | Architecture | Lecturer |
| Seymour | Mandelbaum | City & Regional Planning | Professor Emeritus of City and Regional Planning |
| Ali M. | Malkawi | Architecture | Professor of Architecture; Founder and Director, T.C. Chan Center for Building Simulation and Energy Studies; Chair, Graduate Group in |
| Sumi | Maeshima | Fine Arts | Lecturer, Ceramics |
| Janice F. | Madden | Urban Spatial Analytics | Professor of Regional Science, Sociology, Urban Studies, and Real Estate; Director of Women's Studies, Alice Paul Center for Research on Women and Gender |
| Karen | M'Closkey | Landscape Architecture | Assistant Professor |
| Ken | Lum | Fine Arts | Professor and Director of the Fine Arts Undergraduate Program |
| P. Andrew | Lins | Historic Preservation | Lecturer |
| Peter | Linneman | Real Estate | Albert Sussman Professor of Real Estate; Professor of Finance and Business and Public Policy |
| Paul | Levy | City & Regional Planning | Lecturer |
| Trevor | Lee | Landscape Architecture | Lecturer |
| David | Leatherbarrow | Architecture | Professor of Architecture; Interim Chair |
| John D. | Landis | City & Regional Planning | Crossways Professor of City and Regional Planning; Department Chair; Urban Spatial Analytics Academic Director |
| Diane | Lachman | Fine Arts | Lecturer, Color Theory |
| Ben | Krone | Architecture | Lecturer |
| Ferda | Kolatan | Architecture | Senior Lecturer |