| Election Name: | 1990 United States Senate special election in Hawaii |
| Country: | Hawaii |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1988 United States Senate election in Hawaii |
| Previous Year: | 1988 |
| Next Election: | 1994 United States Senate election in Hawaii |
| Next Year: | 1994 |
| Election Date: | November 4, 1990 |
| Image1: | Sen Daniel Akaka.jpg |
| Nominee1: | Daniel Akaka |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 188,901 |
| Percentage1: | 53.72% |
| Nominee2: | Pat Saiki |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 155,978 |
| Percentage2: | 44.35% |
| Map Size: | 300px |
| U.S. Senator | |
| Before Election: | Daniel Akaka |
| Before Party: | Democratic Party (United States) |
| After Election: | Daniel Akaka |
| After Party: | Democratic Party (United States) |
The 1990 United States Senate special election in Hawaii took place on November 4, 1990. Incumbent Democratic U.S. Senator Daniel Akaka was elected to finish the term ending in 1995. He had been appointed by Governor John Waihee in April 1990 to serve temporarily after the death of Spark Matsunaga.[1] This was the best Republican performance in a U.S. Senate race in Hawaii where the Democrat won since Hiram Fong retired in 1976.[2]