The Decision Analysis Society gives four awards:

Frank P. Ramsey Medal
The Frank P. Ramsey Medal is the highest award of the DAS and recognizes distinguished contributions to the field of decision analysis.
2020 Winner: Milton Weinstein.

Decision Analysis Publication Award
The Publication Award is given annually to the best decision analysis article or book published in the second preceding calendar year (i.e. publications appearing in 2018 are considered for the 2020 award).
2020 Winner:  Eva Regnier (Naval Postgraduate School), for the paper "Probability forecasts made at multiple lead times," in Management Science 64.5 (2018): 2407-2426

DAS Practice Award
The Practice Award is given jointly by the DAS and the Society of Decision Professionals to the best decision analysis application, as judged by a panel of members of both societies.
2020 Winner: Kelly F. Robinson (Michigan State University), Mark R. DuFour (Ohio Department of Natural Resources), Lucas Nathan (Michigan Department of Natural Resources), Jason L. Fischer (Michigan State University), Michael Jones (Michigan State University), Seth J. Herbst (Michigan Department of Natural Resources), and Tammy Newcomb (Michigan Department of Natural Resources) for their work on "A Decision Analytic Approach to Collaboratively Respond to Invasive Grass Carp in Lake Erie"

DAS Student Paper Award
The Student Paper Award is given annually to the best decision analysis paper by a student author.
2020 Winner: Fridolin Haag (Leibniz Centre for Tropical Marine Research), for the paper "Integrating uncertainty of preferences and predictions in decision models: an application to regional wastewater planning."

To learn more about each of these awards (including a list of past winners), follow the links above.