Pinus sabiniana (sometimes spelled P. sabineana) is a pine endemic to California in the United States. Its vernacular names include towani pine, foothill pine, gray pine, ghost pine, and bull pine. The name digger pine was historically used but includes a racial slur.

Pinus sabiniana trees typically grow to 11–14 metres (36–45 ft), but can reach 32 m (105 ft). The pine needles are in fascicles (bundles) of three, distinctively pale gray-green, sparse and drooping, and grow to 20–30 centimetres (8–12 in) in length. The seed cones are large and heavy, 12–35 cm (4+3⁄4–13+3⁄4 inches) in length and almost as wide as they are long. When fresh, they weigh from 0.3 to 0.7 kilograms (0.7 to 1.5 lb), rarely over 1 kg (2.2 lb). The male cones grow at the base of shoots on the lower branches.

The name digger pine supposedly came from the observation that the Paiute foraged for its seeds by digging around the base of the tree. It is more likely that the term was first applied to the people; "Digger Indians" was in common use in California literature from the 1800s. The historically more common name digger pine is still in widespread use. The Jepson Manual advises avoiding this name as the authors believe "digger" is pejorative in origin.

The tree is also sometimes thought of as a pinyon pine, though it does not belong to that group.

The scientific botanical name with the standard spelling sabiniana commemorates Joseph Sabine, secretary of the Horticultural Society of London. Some botanists proposed a new spelling sabineana, because they were confused with Latin grammar. The proposal has not been accepted by the relevant authorities (i.e. United States Department of Agriculture, The Jepson Manual or Germplasm Resources Information Network (GRIN). The GRIN notes that the spelling sabiniana agrees with a provision in the Vienna Code of the International Code of Botanical Nomenclature, the governing body of botanical nomenclature. In that code, recommendation 60.2C states that personal names can be Latinized in species epithets: 'Sabine' is Latinised to sabinius, with the addition of the suffix "-anus" (pertaining to) the word becomes sabiniana (In Latin, trees are feminine, irrespective if the word ends with a masculine suffix, i.e. pinus). The GRIN database notes that Sabine's last name is not correctable and therefore Pinus sabiniana is the proper name for the species.

Pinus sabiniana grows at elevations between sea level and 1,200 m (4,000 ft) and is common in the northern and interior portions of the California Floristic Province. It is found throughout the Sierra Nevada and Coast Ranges foothills that ring the Central, San Joaquin and interior valleys; the Transverse and Peninsular Ranges; and Mojave Desert sky islands. Multiple specimens have also been found in Southern Oregon as well. It is adapted to long, hot, dry summers and is found in areas with an unusually wide range of precipitation: from an average of 250 mm (10 in) per year at the edge of the Mojave to 1,780 mm (70 in) in parts of the Sierra Nevada. It prefers rocky, well drained soil, but also grows in serpentine soil and heavy, poorly drained clay soils. It commonly occurs in association with Quercus douglasii, and "Oak/Foothill Pine vegetation" (also known as "Oak/Gray Pine vegetation") is used as a description of a type of habitat characteristic within the California chaparral and woodlands ecoregion in California, providing a sparse overstory above a canopy of the oak woodland.

Pinus sabiniana needles are a food of the caterpillars of the Gelechiid moth Chionodes sabinianus. Fossil evidence suggests that it has only recently become adapted to the Mediterranean climate as its closest relatives are part of the Madrean pine-oak woodlands found at higher elevations in the southwest US and Mexico.

Animals help spread the seeds, including birds such as the scrub jay and acorn woodpecker.