Mouse models suggest that innate-like lymphocytes play a non-redundant role in controlling pulmonary infection. However, there are important differences between innate-like lymphocyte populations in humans and mice. In humans mucosal associated invariant T (MAIT) cells, which are rare in mice, and the Vγ9Vδ2 subset of γδ T cells, which are only present in primates, predominate. It is unknown whether innate-like lymphocytes also protect against pulmonary infection in humans. Using sputum samples from a well-characterised pneumonia cohort, MAIT cell (Vα7.2-Jα12/20/33) and Vδ2 T cell (Vδ2-Jδ1/2/3/4) abundance was determined by real time PCR. The abundance of each population positively correlated with the other and also with the serum C-reactive protein, but did not correlate with the sputum bacterial load or with the blood leukocyte count. Both innate-like lymphocyte populations were significantly more abundant in the sputum of patients with Legionella pneumonia.  There was no correlation with the severity of pneumonia, as assessed by the CURB-65 score. Therefore, MAIT cells and Vδ2 T cells are both recruited to the alveolar space in pneumonia and may have an important role in the immune response to Legionella infection.