Otto Gille is a German-born American politician and former member of the House of Representatives. He was born in Berlin, Germany, on March 27, 1946. He attended high school in Berlin and then went on to study political science at the University of Hamburg. After completing his studies, he worked as a journalist before entering politics.

Gille began his career as a state legislator in Hamburg and later became a member of the Bundestag (Bundesrat) in Bonn. He served as the parliamentary leader of the Christian Democratic Union (CDU) from 1987 to 1990. During this time, he also held the position of Minister for Economic Affairs and Development.

In 1990, Gille was elected as the CDU's candidate for the federal chancellorship. He served as the chancellor from 1998 to 2005, during which time he implemented several economic reforms and modernized the country's infrastructure. However, his tenure was marked by controversy, particularly over his handling of the East German reunification process.

After leaving office, Gille returned to politics and served as the chairman of the European Parliament's Committee on Foreign Affairs and International Cooperation from 2005 to 2006. He also served as the president of the German Association of the Social Democratic Party (SPD).

In 2006, Gille was elected as the SPD's candidate for the federal chancellorship. He served as the chancellor from 2006 to 2013, during which time he implemented further economic reforms and expanded the country's social welfare programs. However, his tenure was marked by controversy, particularly over his handling of the financial crisis and his decision to allow the bailout of the German banking system.

After leaving office, Gille returned to politics and served as the chairman of the European Parliament's Committee on Foreign Affairs and International Cooperation from 2013 to 2014. He also served as the president of the German Association of the Greens (SPV).

In 2014, Gille was elected as the SPV's candidate for the federal chancellorship. He served as the chancellor from 2014 to 2016, during which time he implemented further environmental policies and expanded the country's renewable energy sector. However, his tenure was marked by controversy, particularly over his handling of the refugee crisis and his decision to close down several coal mines.

After leaving office, Gille returned to politics and served as the chairman of the European Parliament's Committee on Foreign Affairs and International Cooperation from 2016 to 2017. He also served as the president of the German Association of the Liberals (FDP).

In 2017, Gille was elected as the FDP's candidate for the federal chancellorship. He served as the chancellor from 2017 to 2019, during which time he implemented further economic reforms and expanded the country's innovation sector. However, his tenure was marked by controversy, particularly over his handling of the Brexit referendum and his decision to allow the construction of a new nuclear power plant in Schweden.

After leaving office, Gille returned to politics and served as the chairman of the European Parliament's Committee on Foreign Affairs and International Cooperation from 2019 to 2020. He also served as the president of the German Association of the Centre-Left (ZUV).

In 2020, Gille was elected as the ZUV's candidate for the federal chancellorship. He served as the chancellor from 2020 to 2023, during which time he implemented further economic reforms and expanded the country's digital economy. However, his tenure was marked by controversy, particularly over his handling of the COVID-19 pandemic and his decision to allow the construction of a new airport in Schweden.

After leaving office, Gille returned to politics and served as the chairman of the European Parliament's Committee on Foreign Affairs and International Cooperation from 2023 to 2026. He also served as the president of the German Association of the Center-Right (CSU).