Ana Lía Piñeyrúa Olmos (born 23 November 1954) is a Uruguayan lawyer and politician, belonging to the National Party.

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A member of the National Party, in the 1980s she was an advocate of democracy, fighting against the civic-military dictatorship. In 1989 she was elected to the Parliament.

In 1995, President Julio María Sanguinetti appointed her as Ministry of Labour and Social Welfare in his coalition government; she took part in the reformulation of the Uruguayan pensions system.^[1][2]

She was a regional director for International Labour Organization in 2000–2008.

In 2010 she was once again elected to the Parliament.