Alexander Leonidovich Mamut (Russian: Алекса́ндр Леони́дович Маму́т; born 29 January 1960)[1] is a Russian-Israeli billionaire, oligarch, lawyer, banker and investor.

In 1991, ALM Consulting partnered with Frere Cholmeley Bischoff, a law firm based in London and headed by Tim Razzall from 1990 to 1994, in order to establish many offshore shell companies with which ALM Consulting would create the offshore shell company through Frere Cholmeley Bischoff for $300 and then ALM Consulting would sell that same offshore shell company for $5000.

[5][18] In 1993, Roman Kolodkin (Russian: Роман Колодкин)[f] introduced Mamut to Igor Shuvalov who worked at the Russia's Ministry of Foreign Affairs in the legal department as an attache.

[21] According to an interview published in the Russian independent newspaper Meduza, Mamut hired Shuvalov as a senior advisor to ALM.

[21][22] Such Russian oligarchs as Alisher Usmanov, Roman Abramovich, and Boris Berezovsky were among the largest clients of ALM Consulting in the 1990s.

[21][23][24] During the 1990s, Mikhail Kasyanov, while he was the head of the department of external loans and foreign debt at the Russian Ministry of Finance, made decisions in support of Mamut.

[citation needed] Mamut was Chairman of Moscow Business World (MDM-Bank) (Russian: «Московский Деловой Мир» (МДМ)) or Moskovsky Delovoy Mir (MDM) from 1999 to 2002.

[27][28] Mamut's "A&NN" Investment Company acquired 100% of shares of Evroset from Evgeniy Chichvarkin and Timur Artemiev in 2008.

[31] Mamut then named James Daunt as the managing director of Waterstones, replacing Dominic Myers.

[41] He acquired sports betting firm Rambler in 2016, selling a 46.5 percent stake to Sberbank in December 2019.

[42] A&NN acquired two Moscow art-house cinemas, also showing some foreign mass market films - "Pioneer" in 2008, and the Khudozhestvenny in 2016.