In this paper, I introduce an important dynamic function performed by social institutions, which consists in helping individual actors to adapt to significant changes taking place in their environment. This adapting function is juxtaposed against the statically-oriented properties of institutions, which comprise their enabling, constraining, and orienting functions. I explicate the three major adapting roles of social institutions, which correspond to the cognitive, normative, and regulatory institutional elements, and explore the nine principal mechanisms by which social institutions can accelerate the adaptation processes. I examine the main outcomes of the adaptation processes supported by social institutions, as well as the key enablers and barriers to successful adaptation. I present a co-evolutionary model of adaptive dynamics involving individuals, institutions, and the broader external environment, and discuss the major implications of the proposed framework.