Born in Vienna, Alexander attended the Max Reinhardt Seminar for actors until 1948 and then began his career in acting. He starred in several musical comedies, including Liebe, Tanz und 1000 Schlager and Peter schießt den Vogel ab. He recorded Ralph Benatzky's operetta Im weißen Rößl, singing the lead role of Leopold Brandmeyer. He then performed in the 1960 movie version of the operetta.^[3] He later starred in the Count Bobby movies and the Lümmel-series.

In the 1970s, Alexander started a second career as a TV host and entertainer. His music show, the Peter Alexander Show [de], was shown on black and white TV from 1963 until 1966. From 1969, the German TV station ZDF started to air a new colour version which was broadcast until 1996. The Peter Alexander Show has been seen by more than 38 million viewers and has averaged a 71% viewing rate.^{[citation needed]}

After his death, Media Control Charts named him the biggest singles artist ever with 459 songs having charted on the German singles chart. The single "Und manchmal weinst du sicher ein paar Tränen" had the longest run with 34 weeks on that chart, while 2 other songs, "Der letzte Walzer" and "Liebesleid", were able to reach the No. 1 position.^[4] Alexander won 10 Bambi Awards and in 1996 was awarded a Bambi for lifetime achievement.^[5]

Alexander married Hilde Haagen in 1952; they had two children, Susanne Neumayer-Haidinger (1958–2009),^[6][7] an artist, and Michael Neumayer (1963–2019). Alexander was widowed in 2003.^[8][9]

Alexander died on 12 February 2011, aged 84, in his native Vienna.

• Grand Decoration of Honour for Services to the Republic of Austria (1985)^[10]
• Austrian Cross of Honour for Science and Art, 1st class (1974)^[11]
• Ring of honour of Vienna (1984)
• Golden Camera (1970, 1980, 1984 (Germany); 1979 (Austria)) as the best music star of a decade
• Super Golden Camera 1979 (Germany) as the biggest star of all time, with participation of over 11 million readers of Hörzu
• Bambi Award (1970, 1971, 1972, 1973, 1974, 1977, 1978, 1987, 1990; 1996 for his lifetime achievement)
• Golden Europe (1969, 1974, 1979)
• Goldener Bildschirm [de] (1966, 1973, 1974 and 1976); Silberner Bildschirm (1970 and 1971)
• Bronze Bravo Otto (1971)
• Gold Decoration for Services to the City of Vienna (1971)
• Lion of RTL Radio, a total of 9 prizes in bronze, silver and gold (1973)
• Honorary Lion as the best singer
• Golden Microphone (1966) for best male music star in European show business
• Rose Hill award (1992) for having written Austrian film history
• Award of the City of Cologne (1976) for 14 completely sold-out events at the Cologne Sporthalle
• Hermann Löns Gold Medal
• Golden Romy (1992)
• Platinum Romy (1993)
• Other awards were: Lieber Augustin of Vienna (1968), the Golden Bear (1973), Golden Rathausmann (1970), Golden Plate of German gastronomy (1973), Golden Cleo as the most popular star in Austria (1986), German Record Award (1980), Silver Plate of Robert Stolz Foundation in (1980)
• 4th place in the list of the 50 most important Austrians of the last 50 years in a reader poll of the daily Kurier (2004)
• Induction into the Echo Hall of Fame (2011)
• Naming of Peter-Alexander-Platz in Döbling (19th district of Vienna, 2012)

• Michael Wenk & Barbara Loehr: Peter Alexander – Das tat ich alles aus Liebe. Wien: Ueberreuter, 2006 (ISBN 978-3800071814)
• "Peter Alexander" entry, German version of Microsoft Encarta Encyclopedia 2005.

• Peter Alexander at IMDb  
• Peter Alexander at the British Film Institute^{[better source needed]}