"In my opinion, this LG of Delhi Mr. Jung is unsuited for this high post.......We need a Sangh person in Delhi," he said in a tweet.
Swamy, who has previously attacked a number of high-profile people like outgoing RBI Governor Raghuram Rajan and Chief Economic Advisor Arvind Subramanian, gave no reason for seeking Jung's ouster.
He is also a trenchant critic of Delhi Chief Minister Arvind Kejriwal who has in the past accused Jung of targeting his government at BJP's behest.