Marla Apt is a senior-level Iyengar Yoga teacher based in Los Angeles, California. Apt has been involved with medical research studies at University of California, Los Angeles on yoga for depression, anxiety, and Irritable Bowel Syndrome, and created the first yoga therapy content to be incorporated into the curriculum at the David Geffen School of Medicine at University of California, Los Angeles. She is a founding board member of the nonprofit organization Iyengar Yoga Therapeutics and works to bring the healing benefits of yoga to communities in need.

Apt has visited India numerous times for research and spent a year in Pune, India, at the Ramamani Iyengar Memorial Yoga Institute. She served as president of the Iyengar Yoga National Association of the United States and is a current member of the national certification committee.

In 2013, she was honored by the Iyengar Yoga Association of Southern California with the Manouso Manos Leadership Award.

Apt was selected by Yoga Journal magazine as one of 21 young teachers shaping the future of yoga. She writes for numerous publications, conducts teacher training, leads workshops and retreats, and presents at conferences throughout the United States and abroad.