Scale 0–10 where 0 is least transparent and 10 is most transparent. This index is based on the unweighted average of results in all three categories.
ACP (result for reporting on anti-corruption programmes), OT (result for organizational transparency), CBC (result for country-by-country reporting).
Companies covered in this report may provide support to Transparency International chapters worldwide.
According to source, the report is based on publicly available data collected in November and December 2015 and reviewed in January 2016.
This statistic lists the ** least transparent companies in the world with regards to corporate reporting, as calculated by Transparency International in 2015. On the transparency index scale a score of * is considered the least transparent and a score of ** is considered the most transparent. According to this source, Bank of China is rated as the least transparent company with a score of ***.
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Transparency International. (July 11, 2016). Least transparent companies worldwide 2015, according to transparency in corporate reporting index [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 24, 2026, from /statistics/235870/transparency-in-corporate-reporting/
Transparency International. "Least transparent companies worldwide 2015, according to transparency in corporate reporting index." Chart. July 11, 2016. ÌÇÐÄÆƽâ°æ. Accessed July 24, 2026. /statistics/235870/transparency-in-corporate-reporting/
Transparency International. (2016). Least transparent companies worldwide 2015, according to transparency in corporate reporting index. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 24, 2026. /statistics/235870/transparency-in-corporate-reporting/
Transparency International. "Least Transparent Companies Worldwide 2015, According to Transparency in Corporate Reporting Index." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 11 Jul 2016, /statistics/235870/transparency-in-corporate-reporting/
Transparency International, Least transparent companies worldwide 2015, according to transparency in corporate reporting index ÌÇÐÄÆƽâ°æ, /statistics/235870/transparency-in-corporate-reporting/ (last visited July 24, 2026)
Least transparent companies worldwide 2015, according to transparency in corporate reporting index [Graph], Transparency International, July 11, 2016. [Online]. Available: /statistics/235870/transparency-in-corporate-reporting/
