Aleksandra Maria Piątkowska[1] (born in Warsaw) is a Polish civil servant and diplomat, serving as an ambassador to Chile (2012–2017) and Argentina (2019-2024).

Between 1996 and 2001, she worked as Second Secretary at the Permanent Mission to the United Nations in New York as an expert on Latin America, Caribbean and the Balkans.

Following her return from New York, she worked at the Security Policy Department as a First Secretary and Counselor.

She was cooperating with Office for Democratic Institutions and Human Rights at that time.

She presented her credentials to the President of Chile Sebastián Piñera on 8 October 2012.