The study of charge transfer complexes is a fascinating area of research due to their unique electronic and magnetic properties. During the last two decades, several interesting properties like superconductivity, charge transport, and magnetic and ferroelectric properties have been investigated in detail except the magneto-transport and magneto-dielectric effects which have potential applications in multiferroic devices. In the present work, magneto-transport and magneto-dielectric properties have been investigated in the [{Mn^III(CH₂(CN)₂)₂(H₂O)₂}{Chloranil^•–}]·(H₂O)_x charge transfer complex to elucidate multiferroic applications in these types of charge transfer complexes. A giant magnetoresistance (GMR) effect with 200% change in magnetoresistance and large magneto-dielectric response are observed at room temperature. We believe this new finding makes the charge transfer complexes a potential material for multiferroic devices.