Uukuniemi is a former municipality of Finland.
It was located in the province of Southern Finland and was part of the South Karelia region. The municipality had a population of 502 (2004) and it covered an area of 156.58 kmò of which 54.88 kmò was water. The population density was 5.52 inhabitants per kmò. The village of Niukkala was the former administrative center of Uukuniemi. Uukuniemi was once the northernmost and the easternmost municipality of the Kymi province.
The municipality was unilingually Finnish. It was annexed with municipalities of Saari and Parikkala on January 1, 2005. The new municipality was named Parikkala.