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This paper describes a design of dual-polarized composite patch-monopole antenna with reconfigurable radiation pattern. The design consists of a double differential-feed patch loaded with four vertical monopoles symmetrically. The monopoles are connected to or disconnected from the ground plane (GND) by changing the ON/OFF states of p-i-n diodes. By adjusting the connections between the monopoles and GND, the pattern reconfigurability (i.e., one widebeam and three narrow-beam modes) can be achieved for each polarization. The proposed antenna can switch the beam in two dimensions separately <inline-formula> <tex-math notation="LaTeX">$(xz-$ </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">$yz-$ </tex-math></inline-formula> plane). The proposed antenna is characterized computationally and validated experimentally. The measurements result in an overlapping 10-dB return-loss bandwidth of <inline-formula> <tex-math notation="LaTeX">$2.40 - 2.51$ </tex-math></inline-formula> GHz and a port-to-port isolation &#x2265;20 dB in all the modes. In the far field, the prototype can deploy switched beam flexibility. Its radiation characteristics are confirmed by the far-field measurements, which shows the reconfigurable patterns for both polarizations.