This systematic review aimed to evaluate the surgical techniques used for orbital floor reconstruction after Brown class III maxillectomy for cancer. Three databases were searched from January 1990 to January 2022. Of the 614 studies identified, 20 were retained after eligibility assessment. The surgical techniques were classified into four groups: free bone flaps (A), alloplastic implants (B), bone grafts (C), and soft-tissue reconstructions (D). Ectropion and diplopia concerned 42.6% and 6.6% of the patients, respectively. Soft tissue reconstruction was more likely to cause ectropion (17/27), followed by the reconstruction techniques of group B (34/79), group C (26/70), and group A (1/7). Postoperative enophthalmos was identified in 18 patients (9.6%), mostly in group D (5/35), followed by groups B (8/68), A (3/33), and C (2/52). Free bone flaps and alloplastic implants represent good reconstructive options in terms of postoperative ocular parameters.