The first Early Career Committee was formed in 2018 and served until the IAHS2022 in Montpellier. The mandate was extended due to the Covid pandemic.
| Commission | Name (First and Last) | Gender | Career Stage | Country |
| Chair | Nilay Dogulu | Female | PhD | Turkey |
| ICCE | Joris Eekhout | Male | Post-doc | Spain |
| ICCLAS | Tirthankar Roy | Male | Assistant Professor | USA |
| ICGW | Michelle Newcomer | Female | Post-doc | USA |
| ICRS | Kartic Bera | Male | Post-doc | India |
| ICSH | Svenja Fischer | Female | Post-doc | Germany |
| ICSIH | Elzbieta Czyzowska-Wisniewski | Female | Post-doc | USA |
| ICSW | Honeyeh Iravani | Female | PhD | UK |
| ICT | Giovanny Mosquera | Male | PhD | Ecuador |
| ICWQ | Jean Nepomuscene Namugize | Male | PhD | Rwanda |
| ICWRS | Gokcen Uysal | Male | Post-doc | Turkey |