As a global communion of Anabaptist-related churches, Mennonite World Conference engages in dialogue with other Christian world communions and organizations. Most recently, MWC has been involved in dialogue with:

Trilateral dialogue between Mennonites, Catholics and Lutherans

Baptism and Incorporation into the Body of Christ, the Church: final report of the Trilateral Dialogue on baptism (2020)

Die Taufe und die Eingliederung in den Leib Christi, die Kirche: Lutherisch/mennonitisch/römisch-katholische trilaterale Gespräche

• Dialogues on baptism close with learning and prayer (March 2017)
• Incorporation into the body of Christ (April 2016)
• Catholic, Lutheran, Mennonite, Trilateral Dialogue Commission on Baptism (February 2015)
• Mennonites, Catholics and Lutherans hold second round of dialogue on baptism (March 2014)
• Baptism the focus of trilateral dialogue by Mennonites, Catholics and Lutherans (January 2013)

On-going dialogues

After a one-year hiatus for logistical reasons, plans for dialogue between Mennonite World Conference (MWC) and World Communion of Reformed Churches (WCRC) have resumed. The dialogue is envisioned to have three components: praxeological, theological, and historical.

Baptists

• See Baptists and Mennonites in Dialogue, the report on conversations between the Baptist World Alliance and the Mennonite World Conference: 1989-1992.

Believers' Baptism Churches

• See the full text of the report on the Consultation on Believers’ Baptism held in Kingston, Jamaica, January 2015

Catholics

• See  Called Together to be Peacemakers, the report of the International Dialogue between the Catholic Church and Mennonite World Conference, 1998 – 2003.
• See A Mennonite and Catholic Contribution to the World Council' Decade to Overcome Violence, the report from the Mennonite-Catholic conference 23-25 October 2007.
• See letter of congratulations on the appointment of Pope Francis, sent by Cesar Garcia on behalf of MWC to the Vatican. 
• See also trilateral dialogues below

Lutherans

• See Healing Memories: Reconciling in Christ, the final report of the Lutheran-Mennonite International Study Commission, 2010. The report laid the foundation for the July 2010 Lutheran World Federation reconciliation action dealing with the legacy of Lutheran persecution of Anabaptists.
• See January 2014 letter from MWC to Mennonite colleges, universities, seminaries, information centers, and local/regional historical societies.
• See also trilateral dialogues below

Seventh-day Adventists

• See summary and recommendations from two rounds of dialogue in 2011-2012.
  English: Living the Christian Life in Today’s World: Adventists and Mennonites in Conversation, 2011-2012
  German: Als Christ in der heutigen Welt leben: Adventisten und Mennoniten im Gespräch, 2011-2012
• See book which includes all papers presented in the two rounds of dialogue, the summary and recommendations, and responses to questions that Mennonites and Seventh-day Adventists frequently ask of each other.