Electroweak physics results from CMS

We present results of the most recent CMS electroweak measurements performed at the LHC with the data collected in pp collisions at 7 TeV. Production of W and Z bosons is discussed at length, including differential cross sections and asymmetries with respect to several kinematic variables, the weak mixing angle measurement, and production of W and Z in association with light and heavy ($b$, $c$) quarks.