Colombia is one of the most diverse countries regarding crocodylians in the world. However, the spatial ecology of Crocodylus acutus (American crocodile) and Caiman crocodilus (Spectacled caiman) in the wild is largely unknown. To date, no studies have been carried out in the country to understand the spatial dynamics of these species and their relationship with the environment through radiotelemetry. We evaluated the spatial ecology of C. acutus and C. crocodilus in the eastern sector of Tayrona National Natural Park (Arrecifes and Cañaveral) using VHF transmitters during February through July 2021. We collected 275 records from six monitored individuals with age ranges of juvenile and adult for C. acutus and subadults for C. crocodilus. Specifically, two males and one female were monitored for each species with an error rate of 12.69% and frequency of records per day of 1.02±0.56 and 0.61±0.37 respectively. The home range was determined with Minimum Convex Polygon (MCP), Local Convex hull (LoCoH), and the kernel density estimation (KDE) with isopleths at 100%, 95%, and 50%, finding in this method a maximum range for C. acutus of 0.189 km2 and 0.042 km2 for C. crocodilus, with LoCoH being the most accurate method. Only two individuals showed significant spatial autocorrelation (I-Moran z-score:2.65, p-value:0.08e-01 and z-score:2.23, p-value:0.26e-01) corresponding to a clustered distribution with confidence greater than 97%. However, all individuals had mean distances traveled (DMR) <1km in a period of five months (Feb-Jul), with an extended dry season in the field from 2021. It was checked that C. acutus presented significantly greater movements than C. crocodilus (p-value = 3.82e-06, p-value = 1.53e-05, respectively). On the other hand, with the onset of rains in July, the weekly DMR of C. acutus increased, a positive effect was found with the average precipitation (PP) (z-value: 2.04, p-value: 0.04, 95% confidence) , through generalized linear regressions based on binomial negative distributions. In contrast, the weekly DMRs of C. crocodilus were affected by more environmental co-variables: solar radiation, PP, mean and minimum temperature (z-value: 2.12, p- value: 0.33e-01; z-value: -2.01, p-value: 0.45e-01; z value: -2.42, p-value:0.16e-01, respectively). The most robust model obtained for C. crocodilus has an explanatory power of 87.76%, compared to 31.41% for C. acutus. Therefore, it is necessary to increase the number of individuals and monitoring time, as well as to explore more abiotic and biotic variables that may be influencing the DMR of the study species. Finally, these spatial data provide valuable information for management plans and future research inside and outside the protected area for the conservation and management of crocodylians and associated ecosystems.