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We report a nominally high-confidence $\gamma$-ray quasi-periodic modulationin the blazar PKS 0301$-$243. For this target, we analyze its \emph{Fermi}-LATPass 8 data covering from 2008 August to 2017 May. Two techniques, i.e., themaximum likelihood optimization and the exposure-weighted aperture photometry,are used to build the $\gamma$-ray light curves. Then both the Lomb-ScarglePeriodogram and the Weighted Wavelet Z-transform are applied to the lightcurves to search for period signals. A quasi-periodicity with a period of$2.1\pm0.3$ yr appears at the significance level of $\sim5\sigma$, although itshould be noted that this putative quasi-period variability is seen in a dataset barely four times longer. We speculate that this $\gamma$-rayquasi-periodic modulation might be evidence of a binary supermassive blackhole.

A $\gamma$-ray Quasi-Periodic modulation in the Blazar PKS 0301$-$243?