| P & B Lumber Company | 1966 - | Liberty County |
| P & R Lumber Company, Inc. | 1946 - 1960
| Liberty County |
| P. A. Smith | 1909 - | Cherokee County |
| P. B. Melancore | 1869 - 1870
| Harris County |
| P. Bridges | 1928 - 1934
| Anderson County |
| P. C. Minter | 1909 - | Liberty County |
| P. C. Post | 1897 - 1905
| Harrison County |
| P. G. Peterson | 1879 - 1880
| Walker County |
| P. Josserand and Brother Lumber Co. | 1882 - 1909
| Trinity County |
| P. K. Williams | 1907 - 1920
| Upshur County |
| P. K. Williams | 1920 - | Upshur County |
| P. K. Williams | 1928 - | Upshur County |
| P. Kilfoile | 1884 - | Gregg County |
| P. R. Wilson | 1941 - | Angelina County |
| P. S. Ramseur | 1889 - 1898
| Bowie County |
| P. T. Butler and Sons | 1956 - 1957
| Cherokee County |
| P. W. Barron | 1885 - 1887
| San Augustine County |
| P. W. Barron | 1886 - | San Augustine County |
| Pace & Rogers Sawmill | 1957 - | Nacogdoches County |
| Pace Lumber Company | 1915 - 1928
| Montgomery County |
| Pacific Lumber Company | 1948 - | Montgomery County |
| Pacific Studs of Texas | 1987 - | Marion County |
| Pagan-Ritchie Lumber Company | 1949 - 1957
| Bowie County |
| Palestine Crate & Basket Company | 1905 - | Anderson County |
| Palestine Lumber Company | 1905 - 1907
| Anderson County |
| Palmetto Logging Camp at Palmetto | 1916 - 1926
| Newton County |
| Palmetto Lumber Company | 1915 - 1928
| Jasper County |
| Palmetto Lumber Company | 1898 - 1909
| San Jacinto County |
| Palmetto Lumber Company Logging Camp | 1921 - 1939
| Walker County |
| Paris & Trantham | 1916 - | Cherokee County |
| Parish & Stapp
| 1900 - 1901
| Montgomery County |
| Parker & Morgan Lumber Company | 1928 - | Shelby County |
| Parker & Morris | 1907 - | Shelby County |
| Parker Lumber | 1940 - 1949
| Shelby County |
| Parker Lumber Company | 1947 - 1957
| Tyler County |
| Parker Mill | 1950 - 1954
| Shelby County |
| Parrish Lumber Company | 1966 - 1996
| Polk County |
| Partridge Sawmill | 1957 - | Camp County |
| Pat O'Bryne Planing Mill | 1957 - | Cherokee County |
| Patrick, Patrick & Lee | 1899 - 1900
| Cherokee County |
| Patterson and Miller Lumber Company | 1907 - | Upshur County |
| Patterson and Miller Lumber Company | 1907 - 1908
| Upshur County |
| Patterson-Miller Lumber Company | 1897 - 1908
| Camp County |
| Paul W. Lee | 1957 - | Gregg County |
| Paul's Mill | 1930 - | Sabine County |
| Payne & Son | 1903 - | Nacogdoches County |
| Payne and Blount | 1900 - | Nacogdoches County |
| Payne Murray | 1880 - | Montgomery County |
| Pea Ridge Lumber Company | 1900 - 1906
| Nacogdoches County |
| Peach River Lumber Company | 1902 - 1912
| Montgomery County |
| Peacock Crate Factory | 1921 - 1970
| Cherokee County |
| Pearsall Lumber Company | 1900 - | Orange County |
| Peavy-Moore Lumber Company | 1907 - 1928
| Jasper County |
| Peavy-Moore Lumber Company | 1877 - 1927
| Orange County |
| Peebles Lumber Company, Inc. | 1987 - 1996
| Upshur County |
| Peewee Joel | 1940 - | Houston County |
| Pegoda & Bell | 1900 - 1907
| Walker County |
| Penitentiary Commission, State of Texas | 1890 - | Cherokee County |
| Penitentiary Commission, State of Texas | 1890 - | Cherokee County |
| Penitentiary Commission, State of Texas | 1908 - 1912
| Cherokee County |
| Penitentiary Commission, State of Texas | 1911 - | Cherokee County |
| Pennington & Adams | 1908 - | Jefferson County |
| Peoples Lumber & Supply Company | 1932 - 1956
| Liberty County |
| Perkins Lumber Company | 1957 - | Harrison County |
| Perry Bowen Lumber Company | 1949 - 1958
| Gregg County |
| Perry Connally | 1890 - 1900
| Polk County |
| Pert sawmill | 1915 - | Anderson County |
| Pete L. White, possibly once White & Son | 1928 - 1934
| Smith County |
| Pete Vanderburg Sawmill | 1957 - | Bowie County |
| Peter Ellis Bean | 1829 - 1834
| Nacogdoches County |
| Peter Josserand | 1880 - 1891
| Montgomery County |
| Peter Magnus Gunstream (Gundstream) | 1854 - 1938
| Wood County |
| Peters and Hays | 1849 - 1850
| Bowie County |
| Phelps Lumber Company | 1924 - 1925
| Walker County |
| Phil's Wood Shop | 1987 - | Upshur County |
| Philip A. Ryan Lumber Company | 1915 - | Polk County |
| Philip Sublett | 1850 - 1859
| Polk County |
| Philips and McNeil | 1879 - 1880
| Anderson County |
| Phillip Sobyl | 1906 - | Nacogdoches County |
| Phillips & Company Sawmill | 1946 - 1958
| San Jacinto County |
| Phillips & Son Lumber Company | 1948 - | San Jacinto County |
| Phillips Lumber Company | 1952 - 1958
| Cherokee County |
| Pickett I. Butler | 1928 - | Cherokee County |
| Pickett T. Butler | 1907 - 1908
| Cherokee County |
| Pierce & Reynolds | 1873 - | Gregg County |
| Pierce Lumber & Tie Co. | 1970 - 1987
| Cherokee County |
| Pierce, Chamness & Smith | 1916 - | Panola County |
| Pine Grove Lumber Company | 1903 - 1910
| Walker County |
| Pine Island Lumber Company | 1901 - 1903
| Angelina County |
| Pine Island Lumber Company | 1957 - | Hardin County |
| Pine Island Lumber Company | 1946 - | Jefferson County |
| Pine Knot Lumber Company | 1945 - 1948
| Angelina County |
| Pine Mountain | 1987 - | Shelby County |
| Pine Tree Lumber Company | 1903 - 1905
| Panola County |
| Pine Valley Lumber Company | 1905 - 1907
| Cass County |
| Pineview Lumber Company | 1910 - 1918
| Montgomery County |
| Piney Forest Products | 1987 - | Shelby County |
| Pipkin & Haltom | 1856 - 1873
| Jefferson County |
| Pirtle & Pirtle Lumber Co | 1966 - 1996
| Rusk County |
| Pittman Lumber Co. | 1957 - | Rusk County |
| Pitts & Russell Lumber Company | 1957 - | Harris County |
| Pitts Lumber Company | 1947 - | Montgomery County |
| Pittsburgh Lumber Company | 1890 - 1898
| Camp County |
| Pivito & Carpenter | 1908 - 1909
| Hardin County |
| Plemons (?) | 1869 - 1870
| Shelby County |
| Plyler Lumber Company | 1928 - | Gregg County |
| Polk and Burleson | 1900 - | San Augustine County |
| Polley Lumber Co. | 1920 - 1934
| San Augustine County |
| Polly & Ingram | 1859 - 1860
| Sabine County |
| Ponta Lumber Company | 1907 - | Cherokee County |
| Pool, Watson, & Burton | 1906 - | Gregg County |
| Popher Sawmill | 1890 - | Angelina County |
| Popp's Mill | 1918 - 1922
| Nacogdoches County |
| Port Arthur Planing Mill Company | 1909 - 1928
| Jefferson County |
| Port Caddo Lumber Company | 1957 - | Harrison County |
| Port City Cabinet Works, Inc. | 1987 - | Harris County |
| Port Lumber Company | 1934 - | Harris County |
| Porter & Biggs | 1900 - 1908
| Panola County |
| Porter & Pittman | 1934 - | Rusk County |
| Post & Terrell. Wiley Post. Port & Terrell. | 1859 - 1884
| Grimes County |
| Potts & Collins | 1904 - 1910
| Shelby County |
| Potts & Collins | 1905 - 1912
| Shelby County |
| Powehar Mill & Lumber Company | 1934 - | Red River County |
| Powell Brothers | 1904 - | Jasper County |
| Powell Brothers | 1904 - | Jasper County |
| Powell Land & Lumber Company | 1908 - 1910
| Cherokee County |
| Powell Land & Lumber Company | 1910 - 1913
| Cherokee County |
| Powers Lumber Company
| 1899 - 1903
| Gregg County |
| Pratt Nicholson | 1899 - | Gregg County |
| Pratt-Rhodes | 1880 - 1900
| Sabine County |
| Precision Hardwoods, Inc. | 1987 - | Rusk County |
| Price and Collins | 1869 - 1884
| Montgomery County |
| Prince & Perry | 1917 - 1918
| Nacogdoches County |
| Prince & Ross Lumber Co. | 1950 - 1980
| Shelby County |
| Prince & Stoner | 1905 - 1907
| Camp County |
| Prince Brothers Lumber Company | 1928 - | Harris County |
| Prince Lumber Co. | 1957 - | Shelby County |
| Prince Lumber Company
| 1916 - 1921
| Montgomery County |
| Prince Lumber Company | 1928 - 1931
| Anderson County |
| Prince Lumber Company | 1957 - | Harris County |
| Prince Lumber Company | 1931 - | Houston County |
| Prince Lumber Company | 1934 - | Montgomery County |
| Pritchett & Reed | 1906 - | Cherokee County |
| Production Tie and Lumber Company | 1987 - 1996
| Harrison County |
| Pruett and Biggs | 1905 - 1908
| Panola County |
| Pruitt Mill | 1940 - | San Augustine County |
| Pryor & Son | 1881 - 1886
| Cherokee County |
| Pryor Lumber Company | 1934 - | Cherokee County |
| Pyle Lumber Company | 1930 - 1996
| Harrison County |