Fernand Kartheiser
{{Short description|Luxembourgish politician}}
{{Infobox officeholder
| honorific-suffix = MEP
| image = Fernand Kartheiser MEP (2024).jpg
| alt =
| caption = Kartheiser in 2024
| term_start =
| term_end =
| office = Member of the European Parliament
| birth_date = {{Birth date and age|1959|09|30}}
| birth_place = Luxembourg City
| party = Alternative Democratic Reform Party
| website = {{URL|http://fkartheiser.lu/}}
| allegiance = {{Flag|Luxembourg}}
| branch = {{flagicon image|Arméi oofzeechen.svg}}Luxembourg Armed Forces
}}
Fernand Kartheiser (born 30 September 1959) is a Luxembourgish politician who was elected to the European Parliament in 2024, the first time a member of the Alternative Democratic Reform Party won a seat.{{Cite web |title=Key points: ADR enters Brussels, while the Greens hold onto one seat |url=https://today.rtl.lu/news/luxembourg/a/2203525.html |access-date=2024-06-10 |website=today.rtl.lu |language=en}}