Basal cell carcinoma is exceedingly common, but tumors >5 cm in size or giant basal cell carcinomas (GBCCs) are rare. We retrospectively review 10 GBCCs in 8 patients treated by aggressive surgical excision and reconstruction in a single operative procedure. With the exception of 1 chest lesion, all GBCCs involved the face or scalp. The 10 large defects were reconstructed with 5 free-tissue transfers, 2 pedicled musculocutaneous flaps, and 3 rotational skin flaps. There has been no evidence of local recurrence or metastasis in a mean follow-up of 29 months. Neglect has a well-established role in the presence of GBCCs, with undiagnosed preexisting medical problems also common. Surgical excision and reconstruction is the treatment of choice and can be readily accomplished in a single procedure with few complications, good oncologic control, and acceptable cosmetic results.