Objetivo: Describe the behavior of Natural Sciences journals indexed in Publindex (2004-2020). Método Resultados: en el índice bibliográfico nacional (IBN) hay 68 revistas en Ciencias Naturales, la mayor concentración se encuentra en el área de conocimiento Ciencias de la Tierra y Medioambientales (24%) y Ciencias biológicas (21%). En total se analizaron 50 revistas que corresponde al 74%, se excluyeron 18 (26%) por no ser representativas para el estudio. Entre 2004 y 2014 se registró un promedio anual de 54 revistas categorizadas en el IBN, con el nuevo modelo de clasificación el promedio bajo a 19 por año entre 2017-2020. Se identificaron 17197 publicaciones en Google Scholar y se depuro el 10,5% por duplicidad. Las revistas que concentran la mayor cantidad de publicaciones en el total general son Revista Colombiana de Física (6,5%), Acta Biológica Colombiana (6,3%), Revista Colombiana De Entomología (6,2%), Revista de La Academia Colombiana de Ciencias Exactas, Físicas y Naturales (6,1%) y Caldasia (6%) con más de 900 publicaciones. Se registra un total de 58716 citas y un promedio anual de 757 citas de las publicaciones. El análisis informétrico identificó “Caribe Colombiano” como la palabra con mayor concurrencia en las publicaciones. Las revistas con el índice h más alto son Caldasia (H=43), Revista de La Academia Colombiana de Ciencias Exactas, Físicas y Naturales (H=37) y Biota Colombiana (34). Luego de la simulación para los resultados de la Convocatoria Publindex 2020 en la fase 3, las categorías que registran aumento son A1 del (9%) y C (14%). Conclusiones: el 37% de las revistas en Ciencias Naturales tienen alta posibilidad de ser categorizadas en el IBN 2020. Se registra un descenso en la cantidad de publicaciones de las revistas y en las citas desde 2017 y ...Objective: To describe the behavior of Natural Science journals indexed by Publindex in the 2005-2020 period Methods: Bibliometric Analysis Publication: 68 journals (88%) of Natural Sciences magazines registered in Publindex Location: Database Publindex and Google Scholar using Harzing’s Publish or Perish (POP) Key measures: production indicators (total publications, growth rate and productivity index) and citations (Citas, Index H, Index H5, I10). Inclusion Criterion: Consider all documentary typologies retrieved by Harzing’s Publish or Perish (POP) in a combined journal title and ISSN Sample: 68 journals (74%) of the Natural Sciences journals registered in Publindex Setting: Publindex database and academic Google using Harzing Publish or Perish (POP) Main measurements: production indicators (# publications, publications per year and productivity index), citation (H Index, G Index, E Index, HC Index and H5 Index), informatry (word concurrency, cluster of words with the highest concurrence (30)). In addition, in Inclusion criteria: relation to Publindex, journals were identified by area of ​​knowledge, by publishing institution, categorization by year and perspective from phase 3 for the next measurement. All the journals registered in the Publindex database in the Great Natural Sciences area and the documentary typologies recovered by Harzing’s Publish or Peris (POP) were considered in a combined search of the journal title and ISSN. Results: In the national bibliographic index (IBN) there are 68 journals in Natural Sciences, the highest concentration is in the area of ​​Earth and Environmental Sciences knowledge (24%) and Biological Sciences (21%). A total of 50 journals were analyzed, corresponding to 74%, 18 (26%) were excluded as they were not representative for the study. Between 2004 and 2014, an annual average of 54 journals categorized in the IBN was registered, with the new classification model the average being below 19 per year between 2017-2020. 17,197 publications in Google Scholar were identified and 10.5% were purged for duplication. The journals that concentrate the largest number of publications in the overall total are the Colombian Physics Magazine (6.5%), the Colombian Biological Act (6.3%), the Colombian Journal of Entomology (6.2%), the Academy Magazine Colombian of Exact, Physical and Natural Sciences (6.1%) and Caldasia (6%) with more than 900 publications. A total of 58,716 citations and an annual average of 757 citations of publications are recorded. The computerized analysis identified “Colombian Caribbean” as the word with the most concurrence in the publications. The magazines with the highest h index are Caldasia (H = 43), Journal of the Colombian Academy of Exact, Physical and Natural Sciences (H = 37) and Colombian Biota (34). After the simulation for the results of the Publindex 2020 Call in phase 3, the categories that register an increase are A1 of (9%) and C (14%). Conclusions: 37% of the journals in Natural Sciences have a high possibility of being categorized in the IBN 2020. There has been a decrease in the number of journal publications and citations since 2017 and 2018, respectively. The NOVA journals, Acta Biológica Colombiana, Biota Colombiana, Revista Lasallista de Investigación, Revista de la Academia Colombiana de Ciencias Exacta, Físicas y Naturales y Caldasia have the highest bibliometric indexes (H, G, HC, D), and are also categorized and they plan to follow it in 2020.