| Election Name: | 1926 United States Senate special election in Indiana |
| Country: | Indiana |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1922 United States Senate election in Indiana |
| Previous Year: | 1922 |
| Next Election: | 1928 United States Senate election in Indiana |
| Next Year: | 1928 |
| Election Date: | November 2, 1926 |
| Image1: | File:Arthur Raymond Robinson circa 1920.jpg |
| Nominee1: | Arthur Robinson |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 519,401 |
| Percentage1: | 50.62% |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 496,540 |
| Percentage2: | 48.40% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Party: | Republican Party (United States) |
| After Party: | Republican Party (United States) |
The 1926 United States Senate special election in Indiana was held on November 2, 1926, to complete the unexpired term of Senator Samuel M. Ralston, who died on October 14, 1925. Interim Republican Senator Arthur Raymond Robinson, who had been appointed to fill the seat, was re-elected to finish the term over Democrat Evans Woollen.
In October 1925, incumbent Senator Samuel Ralston died in office. Governor Edward L. Jackson appointed Arthur Raymond Robinson to fill the seat until a successor could be duly elected, with the election scheduled for November 2, 1926. The winner would finish Ralston's term ending in 1929.