Most Widely Spoken Languages Only Official in One Country

List the most widely spoken languages only an official language in one country.
Can be co-official or a regional language as long as it is only in one country. For example, if Navajo became official only in the state of North Dakota it would count, but if Saskatchewan also recognized it, then no.
Mostly from this source: https://en.wikipedia.org/wiki/List_of_languages_by_number_of_native_speakers
Hindu and Urdu are grouped together as Hindustani so it does not make the list. Persian has a similar case.
One Chinese "dialect" is on the list.
Quiz by idontlikeit2
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Last updated: December 16, 2017
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First submittedSeptember 19, 2017
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Number of Speakers
Answer
~125 million
Japanese
~82
Javanese
~76
Telugu
~76
Vietnamese
~73
Marathi
~59
Cantonese (Yue)
~56
Thai
Number of Speakers
Answer
~49
Gujarati
~40
Polish
~39
Pashto
~38
Kannada
~38
Malayalam
~38
Sundanese
Number of Speakers
Answer
~33
Odia
~33
Burmese
~30
Ukrainian
~28
Tagalog
~28
Yoruba
~26
Uzbek
Number of Speakers
Answer
~25
Amharic
~24
Igbo
~23
Azerbaijani
~21
Cebuano
~21
Kurdish
~18
Malagasy
+1
Level 67
Sep 19, 2017
Why would you include Cantonese but not Shanghaiese?
+1
Level 74
Sep 19, 2017
Cantonese is official in Hong Kong and Macau, while Wu is not official anywhere, not even Shanghai, which is itself a sub-province-level city. And I debated including "dialects" that are actually separate languages, but eventually decided not to include them because it's fuzzy where one language ends and another begins.
+1
Level 74
Oct 11, 2017
Three areas to focus on: Nigeria, India, Philippines.