The stethoscope was invented by …..? A) Martin Cooper B) Robert Ledley C) Steven Sasson D) Rene Laennec Detail Rene Laennec was a French physician and musician. He invented the stethoscope in 1816. Related MCQs: When did Pakistan join WTO (World Trade Organization)? Saudi dissident assassinated in 2018 was …….? Where the SAARC summit 2004 was held: He is blind …… his defects.