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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.

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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.

Czech and Slovak Republic (Outlines with Maps)
Sections

What Members Say

Brno, Moravia
I credit CGSI for being able to access and decipher the records of my ancestors, as I found such helpful articles in your archives after joining - I will be forever grateful to your organization for that!
Jody D., Kennebunk, Maine, USA

News & Events

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.
Join CGSI at the National Czech & Slovak Museum & Library for the CGSI Symposium on April 21, 2024. Full schedule and registration link…
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
19

Czech Center Museum Houston (CCMH) - Milan Kundera Book Club [program]

Please join us for the last in a series of events exploring the work of Milan Kundera (1929-2023), the Czech writer whose books became an international phenomenon. Free and open to the public.
Sep
21

UMS 85th Moravian Day [festival]

Come to Moravian Day to feel the heart and soul of people celebrating a festival in true ethnic style. Weekend event in Chicago area, featuring Czech brass band Dolnĕmčanka visiting from Czech Republic!
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!
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