Aaron R. Parsons (born 1980) is an American astrophysicist who works primarily in the fields of radio astronomy instrumentation and experimental cosmology.

He majored in physics and mathematics at Harvard University, and graduated with a BA in 2002.

After working as a development engineer at the UC Berkeley Space Sciences Lab from 2002 to 2004, Parsons entered graduate school at the University of California, Berkeley in astronomy, receiving his PhD in 2009 while holding a predoctoral research position at Arecibo Observatory in Puerto Rico.

Parsons returned to UC Berkeley on an NSF postdoctoral fellowship in 2009.

[1] Parsons is the principal investigator of the Precision Array for Probing the Epoch of Reionization (PAPER) array, a radio interferometer designed to detect the first era of star formation, commonly called the Epoch of Reionization, via its effect on hydrogen in the intergalactic medium.