David Alexander Wolf (born August 23, 1956) is an American astronaut, medical doctor and electrical engineer.

David A. Wolf was born in Indianapolis, Indiana, United States and graduated from North Central High School.

Wolf then went on to earn a degree in electrical engineering from Purdue University, where he graduated with distinction and became a brother in the Alpha Tau Omega fraternity.

He received the Carl R. Ruddell scholarship award for research in medical ultrasonic signal and image processing.

"[3] David Wolf began his NASA career in the Medical Sciences Division at the Johnson Space Center in Houston, Texas.

He was responsible for engineering development and spacecraft avionics integration of the American Flight Echocardiograph for investigating cardiovascular physiology in microgravity.

Upon completion, he was assigned as chief engineer for design of the Space Station medical facility, directly responsible for multidisciplinary team management, requirements definition, system design, spacecraft systems integration, project schedule, functional and safety verification, and budgetary authority.

Other Jewish artifacts he took into space and brought back include "a yad – a Torah pointer, and .. a small menorah.

STS-58, designated Spacelab Life Sciences 2, was the second dedicated mission to study regulatory physiology, cardiovascular/cardiopulmonary, musculoskeletal and neuroscience.

An emergency ingress had to be made during an EVA performed in the Russian Orlan space suit due to airlock hatch failure.

The STS-127 launched on July 15, 2009, and the mission delivered the Japanese Experiment Logistics Module – Exposed Section (ELM-ES) and new expedition member Timothy Kopra.

STS-127 was originally scheduled to launch in June 2009 but was delayed after a leak was detected at the gaseous hydrogen vent line.

A third launch attempt was canceled due to bad weather and a further delay occurred when lightning struck near the pad.