Magnetization, electrical resistivity, thermoelectric power and magnetoresistance were measured for the ternary compound MnRhP. The magnetization measurement shows that MnRhP is a ferromagnet with a Curie temperature of T C =390 K and a magnetic moment at 4.2 K of 3.1 μ B /Mn. The electrical resistivity has a maximum near T C . Furthermore, a large negative magnetoresistance is observed near T C . Experimental results are discussed in terms of spin fluctuations.