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As with many types of cancer, immunotherapy is changing the management of squamous cell carcinoma of the head and neck (HNSCC). In a locally advanced or metastatic setting, treatment options have long been curtailed, but this paradigm is currently changing. Checkpoint inhibitors were the first to be validated in second-line treatment with PD-1 and PD-L1 inhibitors and these treatments are available in USA for first-line use. In addition, many studies are underway to use its molecules earlier in the care or try to increase their effectiveness with associations. The issues of patient selection that would benefit the most from immunotherapy and the evaluation of the response to these treatments are not completely solved. The goal is here to update the possibilities of current treatment by immunotherapy in HNSCC as well as on various development pathways in progress.