Texas - Criteria: A (event)
| Merimax Building |
| Mesa Pump Plant |
| Methodist Church Concord |
| Meusebach Creek School |
| Michaelis, M.G., Ranch |
| Michaux Park Historic District |
| Midland Tower |
| Mier Expedition and Dawson's Men Monument and Tomb |
| Mifflin Kenedy Warehouse and Old Starr County Courthouse |
| Milam, Ben, Statue |
| Milam Building |
| Milam County Courthouse and Jail |
| Miller Manufacturing Company Building |
| Millett Opera House |
| Mills County Courthouse |
| Mills County Jailhouse |
| Mills Place Historic District |
| Milroy-Muller House |
| Mimosa Hall |
| Mineola Downtown Historic District |
| Mineral Wells Central Historic District |
| Mission Canal Company Second Lift Pumphouse |
| Mission Citrus Growers Union Packing Shed |
| Mission Concepcion |
| Mission Nuestra Senora del Refugio Monument |
| Mission Parkway |
| Mission San Francisco de la Espada |
| Mission San Juan Capistrano |
| Missouri-Kansas-Texas Company Railroad Station |
| Missouri, Kansas & Texas Railroad Bridge at the Leon River |
| Mitchell, John E., Company Plant |
| MKT Depot |
| Mobley Hotel |
| Model Laundry |
| Monastery of Our Lady of Charity |
| Monroe Shops |
| Montague County Courthouse and Jail |
| Montana Avenue Historic District |
| Monte Verdi Plantation |
| Monte Vista Residential Historic District |
| Montgomery Ward and Company Building |
| Moonlight Towers |
| Moore, Col. Hugh B. and Helen, House |
| Moore Grocery Co. Building |
| Moore Grocery Company |
| Moore-Hancock Farmstead |
| Moore's Crossing Historic District |
| Morningside Historic District |
| Morris Ranch Schoolhouse |
| Mother Neff State Park and F. A. S. 21-B(1) Historic District |
| Mount Vernon African Methodist Episcopal Church |
| Mount Vernon Downtown Historic District |
| Mount Zion United Methodist Church |
| Mrs. Baird's Bread Company Building |
| Mueller Bridge |
| Municipal Swimming Pool |
| Myers-Spalti Manufacturing Plant |
| Nacogdoches Downtown Historic District |
| Nance-Jones House |
| NAS Chase Field-Building 1001 |
| NAS Chase Field-Building 1009 |
| NAS Chase Field-Building 1015 |
| NAS Chase Field-Building 1040 |
| NAS Chase Field-Building 1042 |
| NAS Chase Field-Quarters R |
| NAS Chase Field-Quarters S |
| Nash, Thomas J. and Elizabeth, Farm |
| National Biscuit Company Building |
| National Compress Company Building |
| Nativity of Mary, Blessed Virgin Catholic Church |
| Navarro, Jose Antonio, Elementary School |
| Navasota Commercial Historic District |
| Navy Park Historic District |
| Near Northside Historic District |
| Near Southeast Historic District |
| Nebgen School |
| Nelson Farmstead |
| Newton County Courthouse |
| Ney, Elisabet, Studio and Museum |
| Nicolas Street School |
| Nolan River Bridge 303-A of the Gulf, Colorado and Santa Fe Railway |
| Northcutt House |
| North Fort Worth High School |
| North Side Historic District |
| Northwest Texas Hospital School of Nursing |
| Norway Mill |
| Nuestra Senora del Espiritu Santo de Zuniga Site |
| Oakhurst Historic District |
| Oakwood Cemetery Historic District |
| Oblate Park Historic district |
| O'Connor-Proctor Building |
| Offenhauser Insurance Building |
| Oil Springs Oil Field Discovery Well |
| Old Bakery |
| Old Bastrop Co. Pavilion |
| Old Bnai Zion Synagogue |
| Old Brazoria County Courthouse |
| Old Brownson School |
| Old Brulay Plantation |
| Old Camp Verde |
Data from United States Park Service and Wikidata
