The sensitivity in ecumenical dialogue and disagreement regarding the authenticity of other religions and denominations are a crucial feature of the ELCI. In Italy, it cooperates with the Waldensians, Methodists, Baptists and the Salvation Army, a founding member Federazione delle Chiese Evangeliche in Italia – the Federation of Protestant Churches in Italy (FCEI). The Catholic Church holds an active dialogue that covers practical, pastoral aspects, especially: There are a lot of families in Italy with both denominations, the Lutheran and the Catholic Church, together.
At the international level the ELCI is a member of the Lutheran World Federation (LWF), the Conference of European Churches (CEC) and the Community of Protestant Churches in Europe (CPCE – Community Leuenberg). It has close ties with the Evangelical Church in Germany (EKD) and the United Evangelical Lutheran Church of Germany (VELKD).
The ELCI has been involved in Jewish-Christian dialogue, and it has been a member of the Lutheran European Commission for Church and Judaism (LECCJ) since 1998. There is a close cooperation and mutual assistance with Gustav Adolf Network and Martin Luther Federation (the latter mainly Lutheran) which support evangelical churches and communities both financially and theologically in countries where they are in the minority.
In recent years, the ELCI has strengthened relations with the other Lutheran Minority Churches abroad, and has gone into partnership with several churches, such as the Evangelical Church A. B. in Slovenia (2000), the Evangelical Church in Austria (2007) and the Evangelical Lutheran Church in Hungary (2010).