Dutch Catholic Clothing and Textile Workers' Union

The Dutch Catholic Clothing and Textile Workers' Union ({{langx|nl|Nederlandse Katholieke Kleding- en Textielarbeidersbond}}), known as "Sint Lambertus", was a trade union representing workers in two linked industries in the Netherlands.

The union was founded in 1895, and initially only represented textile workers.{{cite web |title=Nederlandse Katholieke Kleding- en Textielarbeidersbond Sint Lambertus |url=https://www.ru.nl/kdc/bladeren/archieven-thema/subpagina-archieven-thema/stands-vakorganisaties/archieven_van/archieven_i/nederlandse-f/ |website=Katholiek Documentatie Centrum |publisher=Radboud University |access-date=5 February 2023}} By 1964, it had 23,143 members.{{cite book |title=Directory of Labor Organizations: Europe |volume=2 |date=1965 |publisher=United States Department of Labor |location=Washington DC |page=20.10–20.17}}

For most of its existence, the union was affiliated to the Dutch Catholic Trade Union Federation (NKV). On 1 January 1972, it merged with the Dutch Catholic Union of Employees in Metal, Electronics and Related Companies, the Dutch Catholic Mineworkers' Union, and the Dutch Catholic Factory Workers' Union, to form the Industrial Workers' Union NKV.