In this article, a wideband tripolarized antenna for fifth-generation access point applications is proposed. The proposed antenna consists of a circular patch and a square reflector. The antenna is excited by three ports that are separated by 120°. Each port is surrounded by a circular hook shaped slot to increase the bandwidth and isolation of the antenna. Further, the bandwidth is improved by using a shorting pin and a defective ground reflector. The proposed antenna design is examined in terms of the S-parameter, diversity gain, total active reflection coefficient (TARC), front-to-back ratio, radiation pattern and envelope correlation coefficient. The measured impedance bandwidth of the antenna is 46.9 % (3.1 GHz–5 GHz) and the peak isolation is −26 dB. The proposed antenna has a low envelope correlation coefficient of <0.01, a high diversity gain of >9.9 dB and a total active reflection coefficient TARC of −10 dB in the entire wideband range of operation, and a front-to-back ratio of greater than 34 dB. Additionally, the proposed antenna has a peak gain of 7.6 dBi.