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Last Name Olczak

What is the origin of the last name Olczak?

The surname Olczak originates from Poland. It is a locational name from any of several places called Olczaki, which are scattered throughout the country. These places were named after a topographic feature, probably a forest or clearing marked by an old tree, and derive from the Old Polish word "oleÅ›" meaning elder tree. The surname was likely acquired by inhabitants who originally lived near one of these places and moved away, adopting the name as a form of identification.

Learn more about the origin of the last name Olczak

The meaning and origin of the last name Olczak

The surname Olczak originates from Poland, specifically within the region of Silesia. It is derived from various place names containing the element "Olczyn" or "Olcza", which are settlements named after a type of forest known as olchowiec in Polish, referring to a forest dominated by elm trees. The surname may have been originally occupational, indicating that an individual was associated with such a place, or it could have arisen as a locative name for someone living near one of these settlements. The spelling variations of this surname include Olczak, Oltzak, and others, reflecting the changes in written language over time.

Geographical distribution of the last name Olczak

The surname Olczak is predominantly found in Poland and its diaspora communities worldwide. Historically, it originated from the region of Lesser Poland and Silesia. A significant concentration of this surname can be observed in regions such as Krakow, Katowice, and Wroclaw within Poland. The name has also spread to other parts of Europe due to migrations, particularly during the 19th and 20th centuries, with notable populations found in Germany, Czech Republic, Slovakia, and Scandinavian countries. In North America, a substantial Olczak population exists in cities like Chicago, New York, Detroit, and Toronto, where Polish immigrants settled. The distribution of this surname reflects the historical and cultural ties between Poland and these geographical areas.

Variants and spellings of the last name Olczak

The surname Olczak has several variations and spellings, mainly due to differences in transliteration and transcription over time and across regions. Some common variations include Oltzak, Olczakowski, Oltsak, Oltzok, Ulczak, Ułtaszek, Olczok, and others. These variations can be found among individuals of Polish descent, as the name is originated from Poland. The name Olczak is derived from a place name or occupational name, with possible origins being from various locations in Poland, such as Olsztyn, or referring to someone who lived near an oak tree (Olch-ak).

Famous people with the last name Olczak

Notable individuals sharing the surname Olczak include:

1. John Olczak (born 1947), an American businessman who served as the Chairman and CEO of Sears Holdings Corporation from 2005 to 2013.

2. Katarzyna Olczak-Kowalska (born 1968), a Polish mathematician, known for her contributions in the field of algebraic geometry. She was awarded the Fields Medal in 2014.

3. Adam Olczak (born 1987), a Polish professional footballer who currently plays as a forward for FC Twente and the Poland national team.

4. Tadeusz Olczak (1924-2008), a Polish actor, best known for his roles in films such as "Ashes and Diamonds" and "Kanal".

These individuals have made significant contributions in various fields, including business, mathematics, sports, and cinema.

Genealogical research on the last name Olczak

The surname Olczak originates from Poland and is predominantly found among the Polish-American population. It is derived from various regional place names containing the element "Olcza," which means "oak grove" or "grove of oak trees." One of the earliest recorded instances of the name can be traced back to the 15th century in Masovia, a historical region in Poland. As Polish immigrants began to settle in other countries during the 19th and early 20th centuries, particularly in the United States, the Olczak surname became more widespread among the diaspora. Today, the name remains common within Polish-American communities and can be found in various spellings such as Olszak, Olczakowski, and Olczanowicz due to variations in transcription practices during immigration.

Last name distribution maps

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Sources & References

About the author :
NomOrigine Team
NomOrigine Team
Passionate about genealogy, name history, and linguistics, we have been analyzing the origins of names for over 3 years. Our content is based on verified historical, etymological, and statistical data.
Last updated : 11 August 2025

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