Depends. Some say it is Thomas Jefferson as part of the Democratic-Republicans. Otherwise it would be Lincoln who ran under the "Republican" ticket to be acknowledged as a Republican president. If you mean the first Republican that has the same political ideology as the current Republicans, then that would be Nixon.
Republican, and he was the first Republican President elected to the office.
Republican Party. He was the first Republican to be elected to office.
Abraham Lincoln
Abraham Lincoln was the first Republican President.
Abe Lincoln was the first Republican.
Abraham Lincoln became the first Republican president in 1860.
Abraham Lincoln was the first Republican president of the United States of America.
Abe Lincoln was the first Republican.
The first person elected to the US Presidency from the Republican Party was Abraham Lincoln. The first national Republican campaign for President ran John Fremont in 1856 but he lost.
People First Republican Party of Ontario was created in 2007.
Abraham Lincoln was the first president who was a member of the modern Republican party. Some sources, particularly simplified charts, describe earlier presidents as being republican, but that was a different and not directly related party, which was formally called the Republican Democratic party. Thomas Jefferson, for example, is often cited as being the first Republican president, but he was, in fact, a Republican Democrat.
The first Republican Nominee for President was John C. Fremont. Unfortunately, he lost the election, and the first Republican President was Abraham Lincoln.