László Peter Kollar (1926–2000) was an Australian architect and professor at the University of New South Wales, who was known for his Design Principles, which were influenced by the human condition and spiritual traditions.

Kollar's first job in Sydney was as a labourer with the British Australian Lead Manufacturers, but in February 1951 he obtained a position of more personal interest to him — that of architectural draftsman.

His ‘Principles of Design’ lectures were said to have had a profound subject matter which focused on the nature of the human condition informed by a deep understanding of great Spiritual Traditions of the world.

Delightful architecture is not concerned with shape, style, colour, materials, simplicity, clarity, fit, order, or whatever else, in the first place its chief concern is only one, to reveal the wondrous texture of life in our magical world so that we may discover, through knowledge, sensitivity and insight, the invisible significance beyond the visible signs.In his Patterns of Delightful Architecture Kollar asserts that this universal delight is only achievable through harmony, lucidity, analogy, ordered geometry and rhythm, a carefully considered relationship between the whole and its many parts, and sensitivity to the various phases or events in the human condition.

However, other entries by architects like Harry Seidler, Peter Kollar, and Robert Geddes, commended by the competition judges, provide fascinating insights into the wide range of modernist design responses to the site and the competition brief.The University of New South Wales Faculty of the Built Environment annually awards a student with the L. Peter Kollar Memorial Prize for "excellent scholarship making a significant contribution to the promotion of human dignity and social and environmental responsibility with respect for the whole human person in a whole world - the tripartite human nature comprising spirit, mind and body in a world with its corresponding spiritual, subtle and physical dimensions.