Cattenom (French pronunciation: [katnɔm]; Luxembourgish pronunciation: [kɑʔnɔ̃] Luxembourgish: Kettenuewen; German: Kattenhofen) is a commune in the Moselle department in Grand Est in north-eastern France.

It lies about 8 kilometres north of Thionville. The localities of Homeldange, Husange (aka Hussange) and Sentzich are incorporated in the commune.

Historical population

Year	Pop.	±% p.a.
1968	1,851	—
1975	2,374	+3.62%
1982	2,209	−1.02%
1990	2,190	−0.11%
1999	2,272	+0.41%
2007	2,549	+1.45%
2012	2,749	+1.52%
2017	2,654	−0.70%
Source: INSEE

Former names: Cathenem (1182), Kettenem (1214), Kettenhem (1329), Kettenheim (1400), Kerthenhem (1426), Katenem (1432), Kettenheim (1481), Keluchem / Ketenhon / Cetenhem / Kentuchen / Kettenoffen (1544), Kettenhoven (1568-1570), Cettenhouen (1589), Kattenhous (1594), Catnum (16th century), Katenom (1668), Catnom (1685), Kethenoven (1686), Cattenom (1793).

Cattenom is well known for its nuclear power plant, which was built from 1987 to 1992. An artificial lake has been introduced to cool the four nuclear reactors. The creation of this lake has led to the flooding of Ouvrage Kobenbusch, part of the Maginot Line.

• Communes of the Moselle department

• Official website (in French)