Lawrence Bruner (March 2, 1856 – January 30, 1937) was an American entomologist and ornithologist.
His father Uhriah Bruner became a regent of the University of Nebraska, and at age 15, Lawrence enrolled at the school.
He received an appointment as assistant on the United States Entomological Commission in 1880, and as field agent for the United States Department of Agriculture at the University of Nebraska in 1888, where he became instructor in entomology in 1890 and professor in 1895.
He also assisted with ornithology at the university, and is credited for his importance in founding the Nebraska Ornithologists' Union.
In 1897 and 1898, he traveled in Argentina as field agent again for the United States Department of Agriculture.