  Recent measurements of top-quark production at hadron colliders are reviewed.
The inclusive top-quark pair production is determined at four centre-of-mass
energies at Tevatron and LHC with experimental uncertainties that are close to
the uncertainties in theoretical calculations at next-to-next-to-leading order
in QCD. Several differential measurements are performed and compared to
simulation. Production of single top quarks is studied in the three different
production channels. Top-quark pair production with neutral and charged vector
bosons has been observed by the LHC experiments. Finally, production of
additional heavy flavour quark pairs ($b\bar{b}$, $t\bar{t}$) is studied or
searched for.
