Conference Chairman Ambassador Wolfgang Ischinger inaugurated it at Hotel Bayerischer Hof on Friday afternoon (local time).
The prime minister reached Munich earlier in the day. Bangladesh Ambassador in Germany Imtiaz Ahmed wlecomed her at the Munich airport.
Leaders and activists of the Awami League units in Germany and other European countries greeted Hasina with flowers at Hotel Marriott.
She was scheduled to take part at a dinner with the head of other participating countries and the mayor of Munich.
Foreign Minister Abul Hassan Mahmood Ali, who is also travelling with the prime minister, said the two leaders would discuss improving trade and investment, mitigating risks of climate change, refugee and migration crisis in Europe, global conditions of terrorism and violence.