Tomas Martin Lowry was an English chemist who together with chemist Johannes Nicolaus Bronsted developed an acid-base theory.

Born on October 26, 1874, in England. He studied chemistry at Central Technical College in London, where he worked for 17 years as an assistant to Henry Edward Armstrong, a chemist who studied organic chemistry and the ionic behavior of aqueous solutions.

In 1898 Lowry studied and experimentally proved the phenomenon of mutation.

At Westminster Training College in 1906, he taught chemistry. In 1913, he became head of the Chemistry Department at Guy's Hospital Medical School. He was elected member of the Royal Society in 1914.

At the University of Cambrigde, he became the first professor of a chair of Physical Chemistry. In 1923 Lowry developed his most important theory, along with chemist Johannes Nicolaus Bronsted. Each has independently developed a new concept for acids and bases. The new protonic theory would later bear the name of the two scientists, the Bronsted-Lowry theory.

Lowry passed away on November 2, 1936.