The Arizona Pine {Pinus arizonica) is a medium-sized pine in northern Mexico, southeast Arizona, southwest New Mexico, and western Texas in the United States. It is a tree growing to 25-35 m tall, with a trunk diameter of up 1.2 m. The needles are in bundles of 3, 4, or 5, with 5-needle fascicles being the most prevalent. This variablity may be a sign of hybridization with the closely related Ponderosa Pine (Pinus ponderosa). The cones are single, paired, or in whorls of three, and 5-11 cm long.

It has been thought to be a variant of Ponderosa Pine by some botanists in the past, but is now recognized as a distinct species by most authorities.

Two varieties are described, possibly better treated as distinct species; see Ponderosa Pine for a table of characters:

• Pinus arizonica var. arizonica, in the Sierra Madre Occidental from Arizona south to Durango
• Pinus arizonica var stormiae, in the Sierra Madre Oriental from the Big Bend National Park in Texas south to San Luis Potos .

Another related pine, Cooper's Pine (Pinus cooperi) is also treated as a variety of Arizona Pine by some authors, as Pinus arizonica var. cooperi, but other authors regard this as a distinct species, more closely related to Hartweg's Pine (Pinus hartwegii).

This pine is a source of construction timber, and is heavily harvested for firewood. Extensive cutting has reduced the formerly widespread Arizona Pine forests, particularly in Mexico.