Emerging Sources Citation Index

{{infobox bibliographic database

| title = Emerging Sources Citation Index

| image =

| caption =

| producer = Clarivate

| country =

| history = {{start date and age|2015}}

| languages =

| providers =

| cost =

| disciplines = Multidisciplinary

| depth =

| formats =

| temporal =

| geospatial = Worldwide

| number =

| updates =

| p_title =

| p_dates =

| ISSN =

| web = {{URL|1=https://clarivate.com/webofsciencegroup/solutions/webofscience-esci/}}

| titles =

}}

The Emerging Sources Citation Index (ESCI) is a citation index produced since 2015 by Thomson Reuters and now{{when|date=May 2025}} by Clarivate. According to the publisher, the index includes "peer-reviewed publications of regional importance and in emerging scientific fields".{{cite web |title=ESCI Fact Sheet |url=http://wokinfo.com/media/pdf/ESCI_Fact_Sheet.pdf |publisher=Clarivate |access-date=17 May 2018}}

The ESCI is accessible through the Web of Science, together with other Clarivate indexes.{{cite web |last=Web of Science platform |title=Available databases A to Z |publisher=Clarivate |year=2015 |url=http://mjl.clarivate.com/}}[https://books.google.com/books?id=4FQ7DwAAQBAJ&dq=%22Emerging+Sources+Citation+Index%22&pg=PT47 Francisco J. Cantu-Ortiz: Research Analytics] As of June 2021, all journals indexed in ESCI are also included in the Journal Citation Reports. While these journals still did not receive an impact factor until the next year, they did contribute citations to the calculation of other journals' impact factors.{{cite web |title=Web of Science Journal Evaluation Process and Selection Criteria |website=Web of Science Group |date=2020-06-25 |url=https://clarivate.com/webofsciencegroup/journal-evaluation-process-and-selection-criteria/ |access-date=2020-10-21}}{{cite journal |last1=Somoza-Fernández |first1=Marta |last2=Rodríguez-Gairín |first2=Josep-Manuel |last3=Urbano |first3=Cristóbal |title=Journal coverage of the Emerging Sources Citation Index |journal=Learned Publishing |volume=31 | issue=3 | date=2018-02-12 |doi=10.1002/leap.1160 |pages=199–204 |s2cid=51610941 |doi-access=free }} In July 2022, Clarivate announced that journals in the ESCI obtain an impact factor effective from JCR Year 2022 first released in June 2023.{{Cite web |date=2022-07-26 |title=Clarivate announces changes to the 2023 Journal Citation Reports |url=https://clarivate.com/news/clarivate-announces-changes-to-the-2023-journal-citation-reports/ |access-date=2023-08-23 |website=Clarivate}}