Magnetic, transport, thermal properties and orbital state for spinel MnTi2O4

► We show that MnTi2O4 exhibits anomalies in resistivity, specific heat and thermal conductivity. ► We suggest that MnTi2O4 may experience short-ranged orbital ordering below T1. ► MnTi2O4 undergoes a transition from p-type to n-type semiconductor with decreasing temperature. ► The p-type to n-type transition is attributed to the cooperative effects of Jahn-Teller effect and spin-orbit coupling.