Background: Racial and ethnic disparities have been demonstrated to be widespread in lung cancer, including in the US. Despite insurance coverage for standard biomarker testing, testing rates remain low in minority populations. This work sought to analyze institutional data to assess whether there existed ethnic disparities in biomarker testing rates and receipt of targeted therapy between Hispanic/Latino and non-Hispanic/Latino patients of metastatic lung adenocarcinoma (mAdenoCa). Methods: A retrospective study was conducted and reported following ‘strengthening the reporting of observational studies in epidemiology’ (STROBE) guidelines. All Hispanic white and non-Hispanic white patients of mAdenoCa seen at our tertiary care institution in South Florida from 01/2014 to 12/2021 were identified and included through Guardian Research Network (GRN) platform. Socio-demographic, clinicopathological, and tumor molecular features along with treatment-related characteristics were analyzed via descriptive and comparative statistics. Results: A total of 268 mAdenoCa patients were included, of which 179 patients were Hispanic or Latino and 89 were not Hispanic or Latino. Biomarker testing data is reported in the table. Data of MET, KRASG12C, VKIRAS, and HER3 was not available in all cases. The unadjusted product-limit survival analysis indicated worse outcomes for Hispanic whites as compared to non-Hispanic counterparts. There were no differences found regarding targeted therapy use in either population. Conclusions: While metastatic lung adenocarcinoma patients at our center showed no differences in biomarker testing or targeted therapy use, the non-availability of data regarding several key mutations indicates a major dearth of testing. Future studies need to evaluate actionable strategies for improving the existing low testing rates in patients with mAdenoCa, particularly in racial and ethnic minorities.