doi:10.1016/j.dib.2025.111457engFernández-Olmos, MartaFleta-Asín, JorgeGómez-Aguas, TalíaMuñoz, FernandoSáenz-Royo, CarlosImproved database of public-private partnerships from World Bank with imputed economic, institutional and conflict dataART-2025-143451The World Bank's database on private participation in infrastructure (PPI) projects provides detailed information on these initiatives. However, the original dataset includes imputed macro-level data for the countries that is outdated, lacks assigned ISO country codes, and is not linked to other standard country-level variables necessary for proper analysis and control by territory. In the improved version of the database, 10,958 project observations from 1900 to 2021 have been supplemented with ISO 2 and 3 country codes, enabling accurate integration with other databases. Additionally, 49 new variables related to economic, institutional, and conflict data are incorporated by country and year. This enhanced database ensures that researchers can retain critical World Bank information that might otherwise be lost in future updates, as it is not always preserved in repositories.2025http://zaguan.unizar.es/record/15301310.1016/j.dib.2025.111457http://zaguan.unizar.es/record/153013oai:zaguan.unizar.es:153013info:eu-repo/grantAgreement/ES/AEI/PID2020-113338RB-I00info:eu-repo/grantAgreement/ES/AEI/PID2022-136818NB-I00info:eu-repo/grantAgreement/ES/DGA/LMP175_21info:eu-repo/grantAgreement/ES/DGA/S38-23Rinfo:eu-repo/grantAgreement/ES/DGA/S42-23R-CREVALORinfo:eu-repo/grantAgreement/ES/DGA/S52-23Rinfo:eu-repo/grantAgreement/ES/MICINN/PID2021-123154NB-I00Data in Brief 60 (2025), 111457 [8 pp.]by-nchttps://creativecommons.org/licenses/by-nc/4.0/deed.esinfo:eu-repo/semantics/openAccess