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We present a multi-color, high-cadence photometric study of a distant dwarfnova KSP-OT-201611a discovered by the Korea Microlensing Telescope NetworkSupernova Program. From October 2016 to May 2017, two outbursts, whichcomprises a super/long outburst followed by a normal/short outburst separatedby $\sim$91 days, were detected in the $BVI$ bands. The shapes and amplitudesof the outbursts reveal the nature of KSP-OT-201611a to be an SU UMa- or UGem-type dwarf nova. Color variations of periodic humps in the super/longoutburst possibly indicate that KSP-OT-201611a is an SU UMa-type dwarf nova.The super and normal outbursts show distinctively different color evolutionsduring the outbursts due most likely to the difference of time when the coolingwave is formed in the accretion disk. The outburst peak magnitudes and theorbital period of the dwarf nova indicate that it is at a large Galactocentricdistance ($\sim$13.8 kpc) and height ($\sim$1.7 kpc) from the Galactic plane.KSP-OT-201611a, therefore, may provide a rare opportunity to study theaccretion disk process of Population II dwarf novae.

KSP-OT-201611a: A Distant Population II Dwarf Nova Candidate Discovered by the KMTNet Supernova Program