Indiana Code Title 27. Insurance § 27-1-6-3

Sec. 3. The name of any company organized under this article shall contain the word “insurance” and the word “company,” “corporation” or “incorporated,” or shall end with an abbreviation of one of these words, except that the word “company” or the abbreviation “Co.” may be used only if that word or abbreviation is not immediately preceded by the word “and,” or any substitute therefor.

No company organized under this article shall:

Any company organized under this article may change its corporate name at any time by amending its articles of incorporation in the manner hereinafter provided.  The provisions of this section shall not affect the right of any insurance company which is existing under the laws of this state on March 8, 1935, or of any such company which thereafter reorganizes or reincorporates under this article or of any company authorized to transact business in this state on March 8, 1935, to continue the use of its corporate name.