The question is ambiguous as "organ" can refer to a musical instrument or a bodily organ. Therefore, we will address both interpretations.
The Musical Organ
The word "organ" itself originates from the Ancient Greek word ὄργανον (órganon), meaning "instrument" or "tool." This term evolved through Latin into the word organum. Ctesibius of Alexandria, a Greek engineer, is credited with inventing the organ in the 3rd century BC. While he didn't name it in the modern sense, his invention is the root of the word's application to this musical instrument. Specific historical organs have received names from their builders, donors, or institutions, such as the Beckerath Organ at Stetson University https://www2.stetson.edu/today/2024/03/stetsons-beckerath-organ-named-among-most-amazing/ and the Marilyn Mason Organ at the University of Michigan https://smtd.umich.edu/facilities/organs/marilyn-mason-organ/.
Bodily Organs
The naming of bodily organs is a more complex issue. Ancient anatomists often named body parts based on their resemblance to everyday objects. For example, the reference from NPR https://www.npr.org/sections/health-shots/2016/12/16/505754756/the-seahorse-in-your-brain-where-body-parts-got-their-names highlights this practice, noting that the names often reflected this visual similarity. Many organs have names derived from Latin or Greek terms describing their function or appearance. The BBC article https://www.bbc.com/future/article/20180531-how-womens-body-parts-have-been-named-after-men points out the historical bias in the naming of women's body parts, often attributed to men. The specific individuals responsible for naming each organ across history are generally not recorded.
