Maciej

Maciej (Polish pronunciation: ) is a Polish given name, the etymological equivalent of Matthias. Its diminutive forms are Maciek, Maciuś.

Maciej gained popularity in the 1970s and was one of the most popular Polish male names throughout the 1980s and 90s. Its popularity declined in recent years (2020s) but in 2024, 267 723 Polish residents used that name making it the 19th most popular male name in the country.

Namedays according to Polish calendar: 30 January, 24 February, 14 May

Maciej may refer to: Provided by Wikipedia
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  1. 1
    The Influence of Titania Electrode Modification with Lanthanide Ions Containing Thin Layer on the Performance of Dye-Sensitized Solar Cells

    The Influence of Titania Electrode Modification with Lanthanide Ions Containing Thin Layer on the Performance of Dye-Sensitized Solar Cells by Maciej Zalas, Maciej Klein

    Published 2012-01-01
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  2. 2
    Evaluation and experimental optimization of cheap ultrasonic acoustic linear position sensor

    Evaluation and experimental optimization of cheap ultrasonic acoustic linear position sensor by Maciej Zakrzewski, Maciej Ławryńczuk

    Published 2025-06-01
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  3. 3
    The role of FET-PET in patient selection and response assessment for reirradiation in recurrent glioblastoma

    The role of FET-PET in patient selection and response assessment for reirradiation in recurrent glioblastoma by Izabela Zarębska, Izabela Zarębska, Maciej Blok, Maciej Blok, Maciej Blok, Michał Marjański, Michał Marjański, Maciej Harat, Maciej Harat, Maciej Harat

    Published 2025-08-01
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  4. 4
    Self-initiated programming activity as a factor in developing students’ skills in school education: Preliminary research findings

    Self-initiated programming activity as a factor in developing students’ skills in school education: Preliminary research findings by Maciej

    Published 2025-06-01
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  5. 5
    Gilbert Keith Chesterton jako prekursor Soboru Watykańskiego II

    Gilbert Keith Chesterton jako prekursor Soboru Watykańskiego II by Maciej Wąs

    Published 2019-01-01
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  6. 6
    Study of effects of surgical treatment in the larynx area on the speech signal

    Study of effects of surgical treatment in the larynx area on the speech signal by Wiesław WSZOŁEK, Maciej KŁACZYŃSKI, Maciej MODRZEJEWSKI

    Published 2008-01-01
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  7. 7
    Determination of Ranges of Unstable Operation of Axial Compressor for Aircraft Turbine Engines

    Determination of Ranges of Unstable Operation of Axial Compressor for Aircraft Turbine Engines by Adam KOZAKIEWICZ, Maciej ADAMCZYK, Maciej MAJCHER

    Published 2022-03-01
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  8. 8
    Experimental tests of steel double-type balcony connections

    Experimental tests of steel double-type balcony connections by Solarczyk Maciej Tomasz, Piotrkowski Paweł, Niedostatkiewicz Maciej

    Published 2024-01-01
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  9. 9
    Experimental tests of steel balcony connections – Part 1

    Experimental tests of steel balcony connections – Part 1 by Maciej Tomasz Stolarczyk, Paweł Piotrowski, Maciej Niedostatkiewicz

    Published 2025-06-01
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  10. 10
    Mielczewski czy Leszczyński, czyli kto skomponował „Missa cum Credo per octavas”

    Mielczewski czy Leszczyński, czyli kto skomponował „Missa cum Credo per octavas” by Maciej Jochymczyk

    Published 2024-06-01
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  11. 11
    The Process of Adaptation and Assimilation Beyond 1957 As Remembered by the Descendants of the Czech Brethren in the Lower Silesia

    The Process of Adaptation and Assimilation Beyond 1957 As Remembered by the Descendants of the Czech Brethren in the Lower Silesia by Maciej Zawistowski

    Published 2025-05-01
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  12. 12
    Młodzież w oczach papieży na podstawie przemówień podczas Światowych Dni Młodzieży

    Młodzież w oczach papieży na podstawie przemówień podczas Światowych Dni Młodzieży by Maciej Ostrowski

    Published 2017-02-01
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  13. 13
    Polski wykład z prawa rzymskiego w postmodernistycznym świecie

    Polski wykład z prawa rzymskiego w postmodernistycznym świecie by Maciej Jońca

    Published 2025-02-01
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  14. 14
    Die Freizeittheologie mit besonderer Berücksichtigung der Ruhetheologie

    Die Freizeittheologie mit besonderer Berücksichtigung der Ruhetheologie by Maciej Ostrowski

    Published 2017-11-01
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  15. 15
    Uwagi o historii powstania Złotej Bulli z Rimini. Przyczynek do początków władztwa Zakonu Krzyżackiego w Prusach

    Uwagi o historii powstania Złotej Bulli z Rimini. Przyczynek do początków władztwa Zakonu Krzyżackiego w Prusach by Maciej Dorna

    Published 2024-12-01
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  16. 16
    W poszukiwaniu straconego piękna. O „Wielkim pięknie” Paola Sorrentina

    W poszukiwaniu straconego piękna. O „Wielkim pięknie” Paola Sorrentina by Maciej Franciszczak

    Published 2025-04-01
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  17. 17
    Recenzja książki: Jan Stachniuk, Nacjonalizm świecki w Polsce, wybór i wstęp Olgierd Grott, wyd. Księgarnia Akademicka, Kraków 2022, ss. 324

    Recenzja książki: Jan Stachniuk, Nacjonalizm świecki w Polsce, wybór i wstęp Olgierd Grott, wyd. Księgarnia Akademicka, Kraków 2022, ss. 324 by Maciej Strutyński

    Published 2024-12-01
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  18. 18
    Detailed maps conversion technique for usage in realtime 3D mobile games

    Detailed maps conversion technique for usage in realtime 3D mobile games by Maciej Kopczynski

    Published 2025-06-01
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  19. 19
    Between Technical-cultural Innovation by the Teutonic Order and Traditional Blacksmith Craftsmanship

    Between Technical-cultural Innovation by the Teutonic Order and Traditional Blacksmith Craftsmanship by Maciej Majewski

    Published 2020-12-01
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  20. 20
    MARISA DE FILIPPI, Materiali per un corso di esegesi delle fonti del diritto romano, Cacucci Editore, Bari 2008, ss. 111

    MARISA DE FILIPPI, Materiali per un corso di esegesi delle fonti del diritto romano, Cacucci Editore, Bari 2008, ss. 111 by Maciej Jońca

    Published 2017-06-01
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