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The instanton--antiinstanton pair induced asymptotics of perturbation theoryexpansion for QCD correlators is considered. It is argued that though the trueasymptotics is dominated by renormalon, the instanton-induced contribution maydominate in the intermediate asymptotics $n= 5\div 15$.  Obtained asymptotic formulae are valid for $N_f \le N_c$. For $N_f =N_c$ thefinite nonperturbative expression for instanton--antiinstanton contribution wasalso found.  At $q^2<0$ the imaginary part of correlators in the case $N_f =N_c$ issuppressed like $1/\log (q/\Lambda)$, but the present accuracy of instantoncalculations allows to fix it unambiguously.  The series of corrections to the instanton induced asymptotics of the orderof $\sim (\log(n)/n)^k$ is found.Comment: based on talk at International Seminar Quarks-94, 11-18 May 1994,  Vladimir, Russia, LATEX, 9pp, BUDKERINP 94-7

Instanton–anti-instanton pair-induced asymptotics of perturbation theory in QCD