Ivan Cyrus Wettengel (1876 – February 19, 1935) was a United States Navy captain who served as the 25th Naval Governor of Guam.

[13] He overturned many of the policies of William Gilmer, the widely criticized and dislike governor immediately prior to him.

[16] He endorsed increasing medical aid to the island in an effort to in improving the "civilizing and Americanization" of the Chamorro people by making health care and sanitation more widespread.

[17] Ivan Cyrus Wettengel was a significant figure in Guam's history, known for his contributions to education and cultural preservation on the island.

Under his leadership, improvements were made to the educational system, including the establishment of more schools and the implementation of modern teaching methods.

His works helped to document and preserve aspects of Chamorro oral traditions and storytelling for future generations.

Overall, Ivan Cyrus Wettengel's contributions played a significant role in the educational and cultural development of Guam, particularly in the promotion and preservation of Chamorro language and heritage.

Wettengel's wife died on December 13, 1927, while he was stationed at the Mare Island Naval Shipyard.