- July 1866 • Finland
Brigham Young Jr., president of the European Mission, and his brother John W. Young traveled to visit Russian-ruled Finland.
- December 27, 1869 • Sundsvall, Sweden
Anders and Marie Henriksson, recent migrants from Finland to Sweden, were baptized. Missionaries later taught their relatives in Vaasa.
- October 2, 1875 • Stockholm, Sweden
Nils C. Flygare, president of the Scandinavian Mission, called brothers Carl and Johan Sundström from Sweden to preach in Finland.
- May 6, 1876 • Vaasa, Finland
Johanna Charlotta Berg became the first convert to be baptized in Finland.
- November 13, 1876 • Vaasa
The first branch in Finland was organized.
- 1878 • Finland
Latter-day Saint missionaries risked arrest by visiting members and preaching in Finland despite limitations under Russian law on proselytizing.
- July 1880 • Larsmo, Finland
Two couples—Anders Johansson and Lovisa Eriksdotter Strömberg and Matts and Greta Andersson—became the first converts in Larsmo.
- 1888 • Finland
Missionaries discontinued regular preaching in Finland due to opposition from local religious leaders and civic authorities.
- 1897 • Pojo, Finland
While visiting remaining members in Finland, elders from Sweden ordained Carl F. Wickström as a priest so members in Pojo could participate in the sacrament.
- 1903 • Turku, Finland
Elder Francis M. Lyman of the Quorum of the Twelve Apostles, serving as President of the European Mission, dedicated Finland for the preaching of the restored gospel.
- 1914 • Pietarsaari (Jakobstad), Finland
Theodore Tobiason, president of the Swedish Mission, visited with Church members in the area on the eve of World War I.
- 1917 • Finland
Finland declared its independence from Russia.
- May 15, 1941 • Larsmo
The Larsmo Branch was organized, with Viktor Berg as president. Berg was responsible for administering the Church throughout Finland during World War II.
- August 7, 1945 • Larsmo
The first Relief Society in Finland was organized in the Larsmo Branch, with Anna Strömberg as president.
- 1946 • Finland
C. Fritz Johansson and Karl Lagerborg arrived in Finland in May to resume missionary work following World War II. Five additional missionaries arrived later that year.
- July 16, 1946 • Larsmo
Elder Ezra Taft Benson of the Quorum of the Twelve Apostles, serving as President of the European Mission, rededicated Finland for the preaching of the restored gospel. The dedicatory service was held on land that belonged to Lena Renlund.
- January 16, 1947 • Helsinki, Finland
Missionaries were assigned to begin studying to preach in the Finnish language.
- September 1, 1947 • Finland
The Finnish Mission was officially organized, with Henry A. Matis as president. At the time, missionaries were assigned to serve in the cities of Helsinki, Turku, Salo, Tampere, Kokkola, Jakobstad, Larsmo, and Vaasa.
- July 1, 1948 • Finland
The Church was officially registered with the government of Finland.
- July 16, 1948 • Larsmo
The first Latter-day Saint meetinghouse in Finland, a home that Saints had remodeled for worship, was dedicated by Elder Alma Sonne, President of the European Mission.
- June 4–6, 1949 • Helsinki
The first conference of the Mutual Improvement Association (a ministry for youth) in Finland was held, with 50 youth attending from Lahti, Tampere, Turku, and Helsinki.
- June 23–26, 1952 • Finland
Church President David O. McKay visited Finland, meeting with government officials and local Latter-day Saints.
- 1954 • Finland
The Book of Mormon was published in Finnish.
- September 1955 • Zollikofen, Switzerland
In September 1955, 58 Latter-day Saints participated in the first temple trip from Finland to the Swiss temple for its dedication. It took four days to arrive at the temple by boat and train. They arrived in time to attend the final dedicatory session on September 15.
- 1957–58 • Salt Lake City, Utah
The temple ceremonies were translated into Finnish.
- May–June 1960 • Finland
During a visit to Finland, European Mission president Alvin R. Dyer dedicated the first three meetinghouses constructed as part of a Church building program in the cities of Lahti, Hämeenlinna, and Pori, as well as temporary meetinghouses in Savonlinna and Jyväskylä.
- August 1967 • Finland
Elder Howard W. Hunter of the Quorum of the Twelve Apostles dedicated meetinghouses in Turku, Tampere, Jyväskylä, Kuopio, and the Haaga area of Helsinki.
- August 2–3, 1976 • Helsinki
About 3,000 Latter-day Saints gathered to hear Church President Spencer W. Kimball speak at their area conference.
- October 16, 1977 • Helsinki
The Helsinki Finland Stake, the first stake in Finland, was organized, with Kari J. A. Haikkola as president.
- April 17, 1983 • Tampere, Finland
The Tampere Finland Stake was organized.
- 1990–92 • Helsinki
The Finland Helsinki East Mission was organized to support Church members and missionaries in the Soviet Union and former Soviet republics.
- April 2, 2000 • Salt Lake City
Church President Gordon B. Hinckley announced the construction of a temple in Helsinki.
- July 1, 2017 • Helsinki
Ilkka Aura and his wife, Paula Tapola Aura, began their service as the first Finnish couple to preside over the Helsinki Finland Mission.