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We report a multiplanetary system found from the analysis of microlensingevent OGLE-2018-BLG-1011, for which the light curve exhibits a double-bumpanomaly around the peak. We find that the anomaly cannot be fully explained bythe binary-lens or binary-source interpretations and its description requiresthe introduction of an additional lens component. The 3L1S (3 lens componentsand a single source) modeling yields three sets of solutions, in which one setof solutions indicates that the lens is a planetary system in a binary, whilethe other two sets imply that the lens is a multiplanetary system. Byinvestigating the fits of the individual models to the detailed light curvestructure, we find that the multiple-planet solution with planet-to-host massratios $\sim 9.5\times 10^{-3}$ and $\sim 15\times 10^{-3}$ are favored overthe other solutions. From the Bayesian analysis, we find that the lens iscomposed of two planets with masses $1.8^{+3..4}_{-1.1}~M_{\rm J}$ and$2.8^{+5.1}_{-1.7}~M_{\rm J}$ around a host with a mass$0.18^{+0.33}_{-0.10}~M_\odot$ and located at a distance$7.1^{+1.1}_{-1.5}~{\rm kpc}$. The estimated distance indicates that the lensis the farthest system among the known multiplanetary systems. The projectedplanet-host separations are $a_{\perp,2}=1.8^{+2.1}_{-1.5}~{\rm au}$($0.8^{+0.9}_{-0.6}~{\rm au}$) and $a_{\perp,3}=0.8^{+0.9}_{-0.6}~{\rm au}$,where the values of $a_{\perp,2}$ in and out the parenthesis are theseparations corresponding to the two degenerate solutions, indicating that bothplanets are located beyond the snow line of the host, as with the other fourmultiplanetary systems previously found by microlensing.

OGLE-2018-BLG-1011L\lowercase{b,c}: Microlensing Planetary System with Two Giant Planets Orbiting a Low-mass Star