Economist and businessman Sebastián Piñera is sworn in as President of Chile. Aftershocks of the 2010 Pichilemu earthquakes hit central Chile during the ceremony.

Miguel Juan Sebastián Piñera Echenique was a Chilean businessman and politician who served as President of Chile from 2010 to 2014 and again from 2018 to 2022. The son of a Christian Democratic politician and diplomat, he studied business administration at the Pontifical Catholic University of Chile and economics at Harvard University. At the time of his death, he had an estimated net worth of US$2.7 billion, according to Forbes, making him the third richest person in Chile.

The president of Chile, officially the president of the Republic of Chile, is the head of state and head of government of the Republic of Chile. The president is responsible for both government administration and state administration. Although its role and significance have changed over time, and its position and relations with other actors in the national political organization have also evolved, it remains one of the most prominent political offices in the country. It is also considered one of the key institutions that form the "Historic Constitution of Chile," and is crucial to the country's political stability.

The 2010 Pichilemu earthquakes, also known as the Libertador O'Higgins earthquakes, were a pair of intraplate earthquakes measuring 6.9 and 7.0 M_w that struck Chile's O'Higgins Region on 11 March 2010 about 16 minutes apart. The earthquakes were centred 15 kilometres (9.3 mi) northwest of the city of Pichilemu.

March 11 is the 70th day of the year in the Gregorian calendar; 295 days remain until the end of the year.