| Alexander Tah-ray Yui | |
| Native Name Lang: | zh-tw |
| Office1: | Taiwanese Representative to the United States |
| President1: | Tsai Ing-wen |
| Term Start1: | 12 December 2023 |
| Predecessor1: | Hsiao Bi-khim |
| Office2: | 12th Taiwanese Representative to the European Union and Belgium |
| Termstart2: | September 2023 |
| Termend2: | 12 December 2023 |
| President2: | Tsai Ing-wen |
| Predecessor2: | Remus Chen |
| Successor2: | Roy Lee |
| Office3: | Vice Minister of Foreign Affairs |
| Termstart3: | June 2021 |
| Termend3: | September 2023 |
| Minister3: | Joseph Wu |
| Predecessor3: | Miguel Tsao |
| Successor3: | Remus Chen |
| Office4: | 14th Taiwanese Ambassador to Paraguay |
| Termstart4: | October 2015 |
| Termend4: | April 2018 |
| President4: | Ma Ying-jeou Tsai Ing-wen |
| Predecessor4: | José María Liu |
| Successor4: | Chou Lin |
| Nationality: | Taiwan |
| Alma Mater: | Texas A&M University |
| Occupation: | Diplomat |
Alexander Yui Tah-ray is a Taiwanese diplomat currently serving as Taiwan's representative to the United States, succeeding Hsiao Bi-khim. A career diplomat, he previously served as the Taiwanese ambassador to Paraguay from 2015 to 2018, vice minister of foreign affairs from 2021 to 2023, and briefly the representative to the European Union and Belgium.
Yui attended high school in Panama.[1] He received a bachelor's degree in politics and foreign languages (1986) and a master's degree in Spanish literature (1988), both from Texas A&M University.
Yui is the outgoing Representative of Taiwan to the European Union and Belgium since 2023.[2] He was designated as the Taiwanese representative to the United States in November 2023 after the resignation of Hsiao Bi-khim.[3] He had also served several diplomat offices including the vice minister of the Ministry of Foreign Affairs, Taiwanese ambassador to Paraguay, director of the Taiwanese Representative Office in the Latin America and the Caribbean.[4]
Yui is fluent in Spanish and English, and conversational in French. His father was also a diplomat.[1]