Robert T. Welch (born June 8, 1958) is an American lobbyist and former Republican politician.

Shortly after the 1994 election, incumbent state senator Joseph Leean announced he would resign to accept an appointment from the Governor.

Welch won the 1995 special election to fill the remainder of his term.

In 2004, he again deferred re-election for an attempt at election to the United States Senate, but came in a distant 3rd in the Republican primary.

Their son, Peter, also works for the company as Chief Operating Officer.