  Recent results on QCD studies in e+e- annihilations at LEP are presented.
Data recorded by the LEP experiments at centre-of-mass energies between 91.2 to
206 GeV are included. The main topic is the measurement of alpha_s from
event-shape variables and associated aspects like the energy evolution or
non-perturbative power-law corrections. These 'standard' measurements are
complemented by new determinations using the 4-jet rate with an excellent
precision. A summary of the results on QCD colour factors from angular
correlations in the 4-jet system completes this report.
