Elections in the Republic of India in 1991 included the general election, elections to seven state legislative assemblies and to seats in the Rajya Sabha.

†: ICS(SCS) contested in 13 different constituencies, but only the one contested by Sanjay Ramaswamy was endorsed by AIADMK.
‡: Vote % reflects the percentage of votes the party received compared to the entire electorate that voted in this election. Adjusted (Adj.) Vote %, reflects the % of votes the party received per constituency that they contested.
Sources: Election Commission of India