In this paper, on demand reconfigurable notch based UWB-MIMO antenna for wireless applications has been proposed. The proposed antenna consists of two square patch monopole radiators with inverted Z and extended U slots cut through them. Antenna offers good impedance matching (S11 < -10 dB) over the entire Ultra-Wide Band (2.9–13.4 GHz) spectrum. The connected ground structure is used to improve the isolation (S21 < -15 dB) over the entire operating band. Reconfigurability has been achieved using switching elements S1 and S2 which are inserted in the extended U slot and inverted Z slot in each radiator. When both the switches are OFF, notch mechanism is obtained on both the notches C band uplink (5.7 to 6.5 GHz) and C band downlink (3.6 to 4.2 GHz) simultaneously. When the Switch 1 is ON the notch is obtained at C band uplink (5.7 to 6.5 GHz) whereas when the Switch 2 is ON the notch is obtained at C band downlink (3.6 to 4.2 GHz). The proposed antenna offers a simulated bandwidth of 10.5 GHz along with a compact size of 34 × 20 × 1.6 mm 3 with efficient port isolation of more than −15 dB throughout the operating band. ECC and directive gain are less than 0.02 and more than 9.9 dBi respectively.