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Vítáme Vás! (We welcome you!)

Research and connect with families from the Czech and Slovak ancestral lands.

CGSI focuses on the areas of present-day Czech Republic and Slovakia. This includes Czech (Bohemian), German-Bohemian (Böhmisch), Hungarian, Jewish, Moravian, Rusyn (Ruthenian), Silesian, and Slovak ancestry.

CGSI has over 2,000 members residing in the United States, Canada, Czech Republic, Slovakia, and other countries, providing a vast networking opportunity to learn and share information, and connect with fellow members.

Czechoslovak Genealogical Society International (CGSI) wants to help you research and connect with your family history.

We are dedicated to genealogical research and interest in descendants of ethnic groups with roots from the Czech and Slovak ancestral lands of Central Europe.

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News & Events

2025 CGSI 20th Genealogical/Cultural Conference

Join us at the 2025 CGSI 20th Genealogical/Cultural Conference! The conference will be held October 28–November 1, 2025, at the DoubleTree by Hilton Hotel Kansas City - Overland Park located outside of Kansas City, Kansas.

2024 CGSI Symposium

Join CGSI at the National Czech & Slovak Museum & Library for the CGSI Symposium on April 21, 2024. Full schedule and registration link…

Czech Citizenship: History, Laws, and Examples

Are you interested in learning more about Czech citizenship? On December 5th, 2023, Deputy Consul General Ondrej Pometlo discussed the history, laws, and examples of Czech citizenship. You can watch a recording of the presentation below…

Sep

28

Septemberfest – Slovak Folk Festival – NSS [festival]

Join us for this great Slovak heritage cultural event at the National Slovak Society (NSS) Heritage Museum in McMurray, Pennsylvania. Live polka music, dance group, Slovak Café ethnic food, international marketplace, kids area, and more.

Sep

29

46th Slovak Heritage Festival in New Jersey [festival]

We cordially invite you to the 46th Slovak Heritage Festival in New Jersey. The festival will be full of culture, music, and traditions!

Sep

29

35th Annual Czech & Slovak Festival – Czech and Slovak Sokol Minnesota [festival]

Music, folk dancers, gymnastics, vendors, silent auction, ethnic food, Czech beer and wine, children’s games. Visit with fellow CGSI members. Held at CSPS Hall in St. Paul. Free admission.