Louisiana Tech University Arboretum, Botanical garden at Louisiana Tech University in Ruston, United States.

Louisiana Tech University Arboretum covers 50 acres (20 hectares) on the university's South Campus in Ruston, Louisiana, and includes a 14-acre lagoon. It began as a one-acre slash pine (Pinus elliottii) plantation, and later plantings added loblolly pine (Pinus taeda) and exotic pines from Michigan State University. The School of Forestry uses the grounds as a research facility.

The arboretum's history began in January 1947 with a one-acre experimental slash pine (Pinus elliottii) plantation, planted by the first forestry class that graduated in 1948. In 1954, five more acres were planted with loblolly pine (Pinus taeda) and a series of exotic pines obtained from Michigan State University were added the following year. In 1966, John Kuprionis was commissioned by Dr. Lloyd Blackwell and Dr. Hal Barker to create an arboretum, which was officially established on May 12, 1967, with four goals: research, teaching, public education, and environmental restoration.

The site functions as a teaching space where students and visitors encounter different tree species and learn about local plant life. It reveals how the university connects education to the natural world around campus.

The arboretum lies on the South Campus of Louisiana Tech University in Ruston, at 305 Wisteria Street, with free entry. The grounds cover 50 acres (20 hectares) plus a 14-acre lagoon. The School of Forestry uses the plantings as biological material for its classes, so some areas may be working ground rather than display beds.

An unusual feature is that tree species from other universities were added over the years, allowing the project to expand beyond local boundaries. These outside collections show how the site grew through academic networks.