This study provided to analyze the profile of recreational fishermen who frequent Laguna da Jansen on the island of São Luís - MA, Eastern Amazon, because of the socio-economic importance of the activity as an important source of employment and income. Data were collected from June to August 2020 from semi-structured online interviews applied to the study’s target audience using the “snowball” method. 78 questionnaires were applied, of which 95% were men, aged between 26-35 years (35%), 40% with professional occupation in the private sector, and average monthly salary ranging from 1 to 3 minimum wages (47%). Most of the interviewees use: reel and spinning reels (31%), with artificial baits (54%) and landed fishing (37%). They have the snnoks Centropomus spp. (34%), the tarpon Megalops atlanticus (31%), and the ladyfish Elops saurus (15%) as target species. Recreational fishing in Laguna da Jansen has shown to be very promising, but it needs improvements in the local infrastructure, such as the construction of a fishing pier, kiosks with specific stores for fishing materials, and selling food products, cleaning, public lighting, and treatment of domestic effluents and improving the system for opening and closing the gates, optimizing the flow of water exchange, and minimizing eutrophication due to the accumulation of organic matter and other organic and inorganic compounds.