Oleh Dubyna
Ukrainian businessman

Oleh Dubyna (Ukrainian: Оле́г Дуби́на; born 20 March 1959) is a former chairman of the board of the Ukraine's national oil and gas company Naftogaz Ukrainy.
Biography
Dubyna graduated from Kamianske Industrial Institute with a bachelor's degree in Steelmaking in 1982 and from 1985 to 1986 he was a lecturer at the Kamianske polytechnic school.
In 1986–1998, Dubyna worked for the Kamianske metallurgical complex and on 1998–1999 at the Alchevsk metallurgical complex. From 1999 to 2001 he worked as the Director General of Kryvorizhstal steel company.
In 2001, Oleh Dubyna became the Energy Minister and a Vice Prime Minister in Viktor Yushchenko's government, succeeding at this post Yulia Tymoshenko. After resignation of Viktor Yushchenko, Oleh Dubyna served as the first Vice Prime Minister in the Kinakh Government.
From December 2002 until September 2003 he was an adviser of President Leonid Kuchma. On 15 September 2003 Oleh Dubyna was appointed the First Deputy Secretary of the National Security and Defense Council of Ukraine. On 18 June 2004 he was relieved and appointed the president of the national energy holding company (Energy Company of Ukraine), which was being established at the time. From June 2005 to December 2007 Oleh Dubyna worked as the CEO of the Dnieper Metallurgical Combine.
This brief starts where responsible research should: with the source description of “Oleh Dubyna” as ukrainian businessman. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as ukrainian businessman. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Apr 16, 2026. The linked authority identifier is Q2031228. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1959, 1982, 1985 and 1986.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Oleh Dubyna”, its source revision and the description used here.
- Expand the search: follow Oleh Dubyna primary sources, Oleh Dubyna archive and Oleh research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Oleh Dubyna”?
- Which cited source is closest to the event, object or claim?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “Oleh Dubyna” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.