The LCSA has partnership ties with the Selbständige Evangelische Lutherische Kirche (SELK) in Germany through its mission arm. It has also signed partnership protocols with the Lutheran Church Missouri Synod (LCMS) as well as the Free Evangelical Lutheran Synod in South Africa (FELSISA). Membership of the ILC (International Lutheran Conference) affords the LCSA the opportunity to interact with other confessional churches.
Regionally the LCSA is a members of the Lutheran Communion of Southern Africa (LUCSA). In this forum the LCSA can join other Lutherans in addressing regional issues, theological or social, though there exists not altar and pulpit fellowship with member churches within LUCSA.
In partnership with the Lutheran Heritage Foundation it has translated key confessional documents and other resources for pastors and parishioners.