The Taipei Trade and Economic Representative Office in Ulaanbaatar (Chinese: 駐烏蘭巴托-台北貿易經濟代表處; pinyin: Zhù Ménggǔ Dàibiǎo Chù(駐蒙古代表處); Mongolian: Улаанбаатар Хотын Худалдаа Эдийн Засгийн Төлөөлөгчийн Газар; Mongolian: Ulaanbaatar Khotyn Khudaldaa Ediin Zasgiin Tölöölögchiin Gazar) is the representative office of Taiwan in Mongolia, functioning as a de facto embassy in the absence of diplomatic relations.