This document provides an overview of decision making for managers. It defines decision making and explains the importance. There are several types of decisions that managers make including programmed/non-programmed, strategic/tactical/operational. Decisions can be made under conditions of certainty, risk, or uncertainty. Classical rational decision making assumes complete information while bounded rationality recognizes limits. Intuitive and creative decision making rely on experience and brainstorming. Political decision making involves compromise. Risk propensity and ethics also influence the process. Challenges include biases, escalation of commitment, and groupthink.