Missionaries of The Church of Jesus Christ of Latter-day Saints (LDS Church) have been active in Switzerland since 1850.
Individuals
Hans Ringger was a Swiss national who was a leader of the LDS Church in Switzerland; he eventually became a general authority of the church.
Stephen Nadauld and Douglas Bischoff have been missionaries of the church in Switzerland.
References
The Church of Jesus Christ of Latter-day Saints in Switzerland Wikipedia(Text) CC BY-SA