Architecture is art, but art vastly contaminated by many other things. Contaminated in the best sense of the word—fed, fertilized by many things. – Renzo Piano
Italian architect Renzo Piano (born 14 September 1937) is known for his delicate and refined approach to building, deployed in museums and other buildings around the world. Awarded the Pritzker Prize in 1998, the Pritzker Jury compared him to Leonardo da Vinci, Michelangelo, and Brunelleschi, highlighting "his intellectual curiosity and problem-solving techniques as broad and far ranging as those earlier masters of his native land."
As the recipient of the 1995 Pritzker Prize, Tadao Ando (born 13 September 1941) is highly regarded for his unparalleled work with concrete, sensitive treatment of natural light, and strong engagement with nature. Based in Osaka, Japan, Ando's ascetic yet rich version of modernism resonates with the traditional Japanese conception of architecture, and has caused him to be regularly referred to as a "critical regionalist."
Known as Chicago's "Father of Skyscrapers," Louis Sullivan (September 3, 1856 – April 14, 1924) foreshadowed modernism with his famous phrase "form follows function." Sullivan was an architectural prodigy even as a young man, graduating high school and beginning his studies at MIT when he was just 16. After just a year of study he dropped out of MIT, and by the time he was just 24 he had joined forces with Dankmar Adler as a full partner of Adler and Sullivan.
1997 Pritzker Prize laureate Sverre Fehn (August 14th 1924 – February 23rd 2009) was a leader in Post World War II Scandinavian architecture. “His work has an intuitive confidence in how to use the Nordic landscape and its particular light conditions within the built culture, and yet throughout his career each period has reflected a refined sensitivity to international changes and attitudes in architecture,” said his close collaborator Per Olaf Fjeld. “It can be compared to a poetic work conceived on an isolated mountain by a writer with an uncanny, intuitive sense of what is going on in the towns below.” 
The winner of the Wolf Prize in 2005 and the Pritzker of 2008, French architect Jean Nouvel has attempted to design each of his projects without any preconceived notions. The result is a variety of projects that, while strikingly different, always demonstrate a delicate play with light and shadow as well as a harmonious balance with their surroundings. It was this diverse approach that led the Pritzker Prize Jury in their citation to characterize Nouvel as primarily "courageous" in his "pursuit of new ideas and his challenge of accepted norms in order to stretch the boundaries of the field."
Whether built, written or drawn, the work of renowned architect, theorist and educator Peter Eisenman (born 11th August 1932) is characterized by Deconstructivism, with an interest in signs, symbols and the processes of making meaning always at the foreground. As such, Eisenman has been one of architecture's foremost theorists of recent decades; however he has also at times been a controversial figure in the architectural world, professing a disinterest in many of the more pragmatic concerns that other architects engage in.
Kengo Kuma (born 8th August, 1956) is one of the most significant Japanese figures in contemporary architecture. His reinterpretation of traditional Japanese architectural elements for the 21st century has involved serious innovation in uses of natural materials, new ways of thinking about light and lightness and architecture that enhances rather than dominates. His buildings don't attempt to fade into the surroundings through simple gestures, as some current Japanese work does, but instead his architecture attempts to manipulate traditional elements into statement-making architecture that still draws links with the area in which it's built. These high-tech remixes of traditional elements and influences have proved popular across Japan and beyond, and his recent works have begun expanding out of Japan to China and the West.
Shigeru Ban (born August 5th 1957) is a Japanese architect who won the 2014 Pritzker Prize for his significant contributions in architectural innovation and philanthropy. His ability to re-apply conventional knowledge in differing contexts has resulted in a breadth of work that is characterized by structural sophistication and unconventional techniques and materials. Ban has used these innovations not only to create beautiful architecture but as a tool to help those in need, by creating fast, economical, and sustainable housing solutions for the homeless and the displaced. As the Pritzker jury cites: “Shigeru Ban is a tireless architect whose work exudes optimism.”
Known for his daring neo-futurist sculptural buildings and over 50 bridges worldwide, Santiago Calatrava (born July 28, 1951) is one of the most celebrated and controversial architects working today. Trained as both an architect and structural engineer, Calatrava has been lauded throughout his career for his work that seems to defy physical laws and imbues a sense of motion into still objects.
Eduardo Souto de Moura (born 25 July 1952), the Portuguese architect that won the 2011 Pritzker Prize, is known for designs that are formally simple yet serious and at times, dramatic, created through his thoughtful use of colors and materials. His architecture is both versatile and consistent, contextual yet universal, and rarely affected by current trends or styles.
As an architect, critic and winner of the 2002 Pritzker Prize, Glenn Murcutt, (born 25 July 1936) has designed some of Australia's most innovative and environmentally sensitive buildings over a long career—and yet he still remains a one man office. Despite working on his own, primarily on private residences and exclusively in Australia, his buildings have had a huge influence across the world and his motto of "touch the earth lightly" is internationally recognized as a way to foster harmonious, adaptable structures that work with the surrounding landscape instead of competing with it.
As one of the leading architects of the British High-Tech movement, Pritzker Prize-winner Richard Rogers stands out as one of the most innovative and distinctive architects of a generation. Rogers made his name in the 1970s and '80s, with buildings such as the Centre Georges Pompidou in Paris and the Headquarters for Lloyd's Bank in London. To this day his work plays with similar motifs, utilizing bright colors and structural elements to create a style that is recognizable, yet also highly adaptable.
Despite his late entry into architecture, Geoffrey Manning Bawa FRIBA, (July 23, 1919 – May 27, 2003), explored modernism and its cultural implications and created a unique, recognizable style of design which had a lasting impact on architects across the world. Well versed in Modernist theory, Bawa was one of the original proponents of Tropical Modernism, a design movement in which sensitivity for local context combines with the form-making principles of modernism. Bawa’s architecture led to the formation of a new architectural identity and aesthetic for many tropical environments, and won him recognition and awards, including the Chairman’s Award of the Aga Kahn Special Chairman’s Award for Architecture (2001) and the title Deshamanya, in recognition of his contributions to his country by the government of Sri Lanka.
Japanese architect, teacher, and theorist Arata Isozaki (born 23 July, 1931) helped bring Japanese influence to some of the most prestigious buildings of the 20th century, and continues to work at the highest level today. Initially working in a distinctive form of modernism, Isozaki developed his own thoughts and theories on architecture into a complex style that invokes pure shape and space as much as it evokes post-modern ideas. Highly adaptable and socially concerned, his work has been acclaimed for being sensitive to context while still making statements of its own.
Pioneering radical Richard Buckminster "Bucky" Fuller (July 12, 1895 – July 1, 1983), an inventor, architect and the second president of Mensa, had a massive impact on the architecture and popular culture of the latter 20th century. Most famous for popularizing the geodesic dome, Fuller is also known as the father of sustainability, and was driven by his intention “to make the world work for 100% of humanity, in the shortest possible time, through spontaneous cooperation without ecological offense or disadvantage of anyone.”
Through their pioneering theory and provocative built work, husband and wife duo Robert Venturi (born June 25, 1925) and Denise Scott Brown (born October 3, 1931) were at the forefront of the postmodern movement, leading the charge in one of the most significant shifts in architecture of the 20th century by publishing seminal books such as Complexity and Contradiction in Architecture (authored by Robert Venturi alone) and Learning from Las Vegas(co-authored by Venturi, Scott Brown and Steven Izenour).
One of the most highly regarded architects of his generation, Portugese architect Álvaro Siza (born 25 June 1933) is known for his sculptural works that have been described as "poetic modernism." When he was awarded the Pritzker Prize in 1992, Siza was credited as being a successor of early modernists: the jury citation describes how "his shapes, molded by light, have a deceptive simplicity about them; they are honest."