Buena Vista is an unincorporated community in Clinton County, Iowa, United States, located on the north bank of the Wapsipinicon River, almost 7 miles south of Calamus and two miles east of Dixon. From 1849 to 1914, it had a post office, sited in the southwestern part of Section 9 of Olive Township, at the southeast corner of the intersection of 178th Avenue and 298th Street.