Siddhartha Gautama is the religious founder or leader of the religion Buddhism. In that sense he is the leader. As far as a living leader of all Buddhists, there is none. Like Christianity each sect has their own hierarchy and leaders.
Chat with our AI personalities
There is no single leader od Buddhism just like there is no single leader of Christianity. Some sects have their own leaders in the same way that the Roman Catholic Chirch has their Pope. A good example of this is the Dalai Lama who is the head of the Gelug or "Yellow Hat" branch of Tibetan Buddhism. While he is well known he does not speak for Buddhists in general.
Generally, in Buddhism, the question of a deity is irrelevant - so many do not consider it to be a religion, per se, moreover it is a philosophy. A way to live our lives & strengthen of minds.
That being said, our leaders are our Teachers. Being Dharma Instructors or Zen Masters. Often people believe that His Holiness the Dali Lama is the leader of Buddhism. This is an inaccurate statement, as he is the leader-in-exile of Tibet & of the Gelug or "Yellow Hat" branch of Tibetan Buddhism, not all Tibetan Buddhism. . Often believed to be the reincarnation of Avalokiteshavara - the Bodhisattva of compassion.
This makes Buddhism similar to Judaism, Islam and Christianity where there is no singe leader, just leaders of sects and groups.
In Buddhism, they don't use the term " spiritual leader". Buddhists refer Buddha as a "Great Teacher or Instructor" but not as a "leader".
There is no religious leader of Buddhism. Some Buddhist denominations have leaders, however.
The Sanga, which is the collection of monks in any given area, lead Dhamma (The teachings of Buddhism) services.