Bengali, AKA Bengla is an Indo-Aryan language, has approximately 280 million speakers around the world; the language is widely spoken in Bangladesh as well as the national and official language of that country. The Bengali language has roots that trace all the way back to Sanskrit and Prakrit, with Sanskrit influencing the vernacular of the Bengal language. With the arrival of traders, Bengali was influenced by Arabic, Persian, and Turkic languages. The Modern form of Literary Bengali developed in the 19th and 20th Centuries and was based on the West-Central spoken dialect in the Nadia region.
To read more about this language, Click Here and Here.
The Bengali translations were translated by multiple translators and published by Ankur Prakashani in 2003. These translations are typically somewhat hard to find outside of the Bengali speaking area. That said, sometimes they show up in foreign language bookstores and and on e-commerce sites. The copies are not particularly well made, which is why most of them are only in acceptable condition despite being new and unread. Moreover, the translation is not well done I've been told a by a few people. I have heard from a Bengali speaker that the 1st book's chapter title is misspelled and that the same book's 1st sentence is missing a verb. Additionally, Mr. Filch is married to Mrs. Norris I've also been told. There are also many other grammatical issues I've heard about as well. I cannot speak to how true any of these issues are as I don't read nor speak Bengali, so if you know differently, please let me know.
To hear the 1st paragraph of the 1st book, Click Here.
হ্যারি পটার এন্ড দ্য ফিলোসফার্স স্টোন
ISBN: 9844640911
হ্যারি পটার এন্ড দ্য চেম্বার অব সিক্রেটস
ISBN: 9789844641037
The 1st Edition Bengali books are published using a mix of 1st edition US and UK art; I've been told (haven't seen) that book 3 was also published using Cliff Wright art as well. The Bengali books are notoriously poorly made, unfortunately.
A 2nd edition was published as well using the UK Jonny Duddle cover art; I've heard from people who own these Bengali Duddle books that they are also not well made.
হ্যারি পটার এন্ড দ্য প্রিজনার অব আজকাবান
ISBN: 9844641152
হ্যারি পটার এন্ড দ্য গবলেট অব ফায়ার
ISBN: 9786000788964
হ্যারি পটার এন্ড দি অর্ডার অব দ্য ফিনিক্স
ISBN: 978984464172
হ্যারি পটার এন্ড দ্য হাফ ব্লাড প্রিন্স
ISBN: 9844642018
হ্যারি পটার এন্ড দ্য ডেথলি হ্যালোজ
ISBN: 9844642018