Margaret Nnananyana Nasha (born 6 August 1947) is a Botswana politician who served as the Speaker of the National Assembly from 2009 to 2014. She was the first woman to hold the position. Nasha worked as a journalist and civil servant before entering politics, and also served a term as Botswana's High Commissioner to the United Kingdom. She entered the National Assembly at the 1994 general election, and subsequently served as a minister in the governments of Quett Masire and Festus Mogae. A representative of the Botswana Democratic Party (BDP), Nasha was elected to the speakership after the 2009 election. After a falling out with President Ian Khama, she lost the BDP speakership nomination to Gladys Kokorwe in 2014, and in 2016 defected to the opposition Botswana Movement for Democracy.