Objective: To determine the association between depression and functional dependence in elderly patients of the Centro Geriátrico Naval (Peruvian naval medical center for elderly people). Materials and methods: A retrospective, cross-sectional, analytic study conducted from a secondary data analysis, with a convenience sample size of 625 elderly people. Results: In the linear regression analysis which predicts functional dependence according to the Barthel Index, it was found that, for each point in the Yesavage questionnaire, the Barthel Index score decreases 4.8±1.82 points and, for every 5 points, it decreases 29.99±3.62 points. In relation to the Lawton Index, significant outcomes were found regarding age, gender, military rank, physical performance, grip strength and depression. Conclusions: The results show an association between depression and functional dependence in performin...