乔·莱恩（Jo Leinen，1948年4月6日－）在1948年4月6日出生于德国西南部的比斯唐市。

莱恩是一名德国律师、政治家以及欧洲议会议员。在德国他是德国社会民主党([[SPD - Sozialdemokratische Partei Deutschlands)的一员，而在欧洲层面他是社会民主进步联盟(S&D Group - Progressive Alliance of Socialists and Democrats)的议员。

莱恩一直活跃在德国与欧盟政坛。他主要致力于环境保护相关的政策法规与欧盟的外交政策，并且坚信联邦制是实现欧洲统一的必经之路。在2014年，他当选为欧洲议会对华关系代表团(Delegation for the relations with China)主席，从而将工作重心放到中欧关系发展上面。

Jo Leinen (born April 6, 1948 in Bisten, Sarre) is a Member of the European Parliament representing Germany. He was elected on the SPD ticket and acts as a representative within the Party of European Socialists group. He is well known for his environmental and foreign affairs activities, as well as for his support for a Federal Europe.