Tracy Dennis-Tiwary (born January 11, 1973) is an American clinical psychologist, author, health technology entrepreneur, and professor of psychology and neuroscience at Hunter College and the Graduate Center of The City University of New York.

After being admitted to the Eastman School of Music of the University of Rochester as a performance major (oboe), she shifted her focus of study to graduate summa cum laude with her B.A.

Dennis-Tiwary founded the Emotion Regulation Lab at Hunter College, where she examines biological, psychological, and social factors in the development of emotion regulation across the lifespan, its implications for mental health and illness (with a focus on anxiety and teen risk for suicide), and neurocognitive processes underlying novel treatment approaches (like attention bias modification) for anxiety, stress, addiction, and other behavioral health problems.

[22][23] For example, Dennis-Tiwary and colleagues were the first to show that the late positive potential (LPP) varies with emotion regulation abilities in children as young as five years of age.

[24][25] She further showed that these ERPs are developmentally sensitive, and predict individual differences in emotion regulation behaviors and adjustment in children[26][27][28] and adults[23] and in cognitive control capacities.

[47][48] In other research, Dennis-Tiwary and colleagues at the Pennsylvania State University developed a novel modification of the classic Still Face paradigm to model and examine the impact of parental withdrawal via mobile devices.

Since 2020, Dennis-Tiwary has served as a research advisor for the Global Day of Unplugging[58] and the Hunter College Food Policy Center,[59] as well as a media consultant for ABC News and NBC/Universal from 2017 to 2021.