  The paper gives an overview of strangeness-production experiments at the
Cooler Synchrotron COSY. Results on kaon-pair and $\phi$ meson production in
$pp$, $pd$ and $dd$ collisions, hyperon-production experiments and $\Lambda p$
final-state interaction studies are presented as well as a search for a
strangeness $S=-1$ resonance in the $\Lambda p$ system.
