Jiří Dienstbier Jr. (born 27 May 1969) is a Czech politician, lawyer and the Senator for Kladno from 2011 to 2020, representing the Social Democratic Party (ČSSD).

While Jiří Dienstbier Jr was 10 years old, his father was imprisoned for his work in a movement acting parallel to Charter 77, the Committee for the Defense of the Unjustly Prosecuted (Czech: Výbor na obranu nespravedlivě stíhaných; VONS).

Organisations of this kind were highly controversial, as under the regime even the slightest unauthorised public political activity could result in severe legal consequences for those involved.

The march from the Albertov district of Prague triggered a further series of demonstrations over the next few weeks, which culminated in the Velvet Revolution, and the end of communist rule in Czechoslovakia.

Although Dienstbier did not become Mayor,[17] the party had 14 councillors elected,[18] with a record share of the vote in the city,[citation needed] traditionally a weak area for ČSSD.

Dienstbier refused to enter a coalition with the Civic Democratic Party, telling The Prague Post such a deal would make him feel "like a mafia member".

[26] While sitting as a Senator, Dienstbier was nominated as the ČSSD candidate for the first direct presidential elections in the Czech Republic, to be held in January 2013.

[2] As a young man in the 1980s, Dienstbier was a keen beekeeper, which he credits with helping him deal with the systematic pressure that the communist regime in Czechoslovakia applied to him and his family.

[31] As a long-term fan of Bohemians 1905, in 2005 Dienstbier provided legal advice to the club to prevent it being defrauded by its chairman Petr Svoboda.