Origami is the art of folding paper into representational and abstract forms without cutting. Learn its history from Japanese ceremony to computational design.
A single uncut square of paper, folded into a dragon with horns, scales, claws, and a twisting tail that extends in a continuous spiral. Satoshi Kamiya's Ryujin 3.5 took over 30 hours to fold and requires a sheet of paper at least 50 centimeters square. The crease pattern, the map of every mountain and valley fold that guides the final form, contains thousands of individual folds. This is not the origami most people know. The crane folded from a 15-centimeter square in a few minutes is origami too, but the distance between that crane and Kamiya's dragon is the distance between a folk craft and an art form that now intersects with mathematics, engineering, and artificial intelligence.
Origami is the practice of creating form by folding paper alone, without cutting or gluing. The word combines the Japanese ori (to fold) and kami (paper). While the term is Japanese, the practice of paper folding has a multinational history, with independent traditions in Europe and East Asia that converged in the 19th and 20th centuries. Today origami functions as an internationally recognized art form, a mathematical discipline, and a design methodology with applications in aerospace engineering, architecture, and medicine.
This entry covers what origami is, how it developed from ceremonial and folk traditions into a fine art, which practitioners defined it, and how computational tools are transforming the field.
Origami creates three-dimensional form through folding a flat sheet, typically a square, without cutting, tearing, or adhering. The basic vocabulary is simple: mountain folds (raised ridges) and valley folds (depressed troughs). Every origami model, from a simple crane to Kamiya's dragon, is built from these two operations. What separates a beginner's crane from a master's dragon is not a different technique but a vastly more complex arrangement of folds, organized through a crease pattern that maps the entire model before the first fold is made.
The modern ban on cutting is itself a historical development, not an ancient rule. As Kogei Japonica's history of origami documents, the strict prohibition on cutting only became standard when new design techniques in the late 20th century rendered cutting obsolete. Box pleating, circle packing, and stick-figure-based design techniques allowed folders to generate large numbers of points and flaps from a single sheet, making cuts unnecessary. It was technological innovation, rather than tradition, that created the strict rules associated with origami today. Read the full history at Kogei Japonica.
Paper was invented in China around 105 CE, and paper folding likely began shortly after. The earliest documented paper folding comes from Japan, where it was used in Shinto ceremonies by the Heian period (794-1185). Noshi, folded paper attachments attached to gifts, and shide, zigzag-folded paper streamers used in Shinto shrines, are among the oldest ceremonial folding practices. Koshiro Hatori, in his essay "History of Paperfolding in the East and West Before Interfusion," explicitly deconstructs the idea of origami as ancient. He states that we "cannot trace the history of origami more than a few hundred years." The narrative of an unbroken tradition from ancient China to today is a modern invention. Read the full analysis at Fold Between the Lines.
Folding traditions also developed independently in Europe. The baptismal certificates of 17th-century Germany and Poland were folded into elaborate double blintz forms. Friedrich Frobel, the founder of kindergarten, incorporated paper folding into his educational system in the mid-19th century, and Frobelian folding spread through Europe and America as part of early childhood education. These European traditions were entirely separate from Japanese folding until the opening of Japan in the 1850s, when the two strands began to fuse.
If there is a single turning point in origami's history, it is the emergence of Akira Yoshizawa (1911-2005). Before the mid-20th century, origami was a folk practice with no systematic means of documentation or transmission. Yoshizawa changed that. He developed and refined a system of diagrammatic notation for origami instructions, using dashed lines for valley folds, dot-dash lines for mountain folds, and arrows to indicate folding directions. In the 1960s, American origami advocate Samuel Randlett further organized and standardized this system. The result, known internationally as the Yoshizawa-Randlett system, became the global standard for origami diagrams. Yoshizawa is recognized by the Nippon Origami Association and the international origami community as the figure who moved origami from folk craft to international art form.
After Yoshizawa, origami evolved toward what is now called complex origami. In Japan, Jun Maekawa developed theoretical frameworks for origami's mathematical properties. Satoshi Kamiya, working in the 2000s, produced pieces of unprecedented complexity, including the Ryujin series, that are recognized internationally as representing the current limits of the form. In the United States, physicist and origami artist Robert J. Lang developed TreeMaker, software that uses mathematical algorithms to generate fold patterns for complex subjects. By establishing origami as a domain of engineering-grade design, Lang's work helped move the practice beyond any single national tradition into an international field.
Yoshizawa produced over 50,000 models in his lifetime, though only a few hundred were diagrammed. His work ranged from animals and insects to abstract sculptures, all characterized by a quality he called "alive" folding, where the paper was shaped and curved after the structural folds were complete, giving the model a sense of breath and movement. His Origami Dokuhon I (1957) was the first major publication of his notation system. The Yoshizawa Origami Museum in Kaminokawa, Japan, holds the largest collection of his work.
Lang is a physicist who left his career in laser engineering to pursue origami full-time. His TreeMaker software (developed in the 1990s) solves the circle-packing problem: given a desired subject with a certain number of appendages, how should the paper be allocated so that each appendage has enough material? Lang's models, including his Black Forest Cuckoo Clock (1987, folded from a single sheet with no cuts) and his insect series, demonstrate that computational design can produce models of extraordinary complexity. A 2025 thesis from the University of British Columbia analyzed Lang's work alongside that of Erik and Martin Demaine, arguing that Lang maintains a dual centrality between the computational crease pattern and the final material art object. Read the thesis at UBC Library Open Collections.
Kamiya is one of the leading figures of complex origami. His Ryujin 3.5, a multi-axial dragon with scales, horns, claws, and a serpentine body, is considered one of the most complex single-sheet origami models ever designed. The crease pattern requires a sheet of at least 50 centimeters and over 30 hours of folding time. Kamiya's work represents the branch of origami that pursues structural realism, where models must mirror the intricate anatomies of real-world subjects.
Erik Demaine, a computer scientist at MIT, and his father Martin Demaine, a glassblower and artist, collaborate on curved-crease origami sculptures that combine mathematical research with fine art. Their work was featured in MoMA's 2008 exhibition Design and the Elastic Mind, and MoMA acquired several of their pieces for its permanent collection. The UBC thesis argues that the Demaines' work exemplifies a practice where paper serves as a "passive material for mathematical discovery," contrasting with Lang's approach, which maintains the inseparable bond between form, material, and the art of the fold itself.
In January 2026, Google DeepMind published COrigami, an AI-driven pipeline that generates crease patterns from natural language descriptions. The system uses reinforcement learning and large language models to produce flat-foldable crease patterns that satisfy strict geometric constraints while meeting subjective aesthetic criteria. Robert J. Lang was listed as a contributor to the project. The paper demonstrates how AI systems can satisfy multi-objective physical constraints to enable mathematically grounded co-creativity between human artists and machines. Read the paper at alphaXiv.
Present-day origami generally avoids the "origami paper" sold in small, pre-cut square packs. This type of paper, called kami by folders, is cheaply mass-produced from wood pulp with short fibers and low strength. It has uses for practice and education but is inadequate for advanced techniques. Modern folders create exhibition-worthy models using wet-folding, which requires paper with internal sizing, adhesive that binds the paper fibers together. Sizing can also be added to the surface of an existing sheet, expanding the range of foldable materials to softer papers with different textures and thicknesses.
Specialized origami papermakers such as Origamido Studio and The Paper Circle produce papers designed specifically for complex folding: thin, strong, and highly compressible. Contemporary folders have also started using glue in their models, not to adhere multiple sheets together, but to preserve a model's shaping against heat and humidity. This represents a sharp turn away from the ephemeral nature of napkin folds and kindergarten toys toward archival, long-lasting works.
When origami met contemporary science and engineering, the result was not a nostalgic revival of traditional craft. It was a practical solution to problems that other design approaches had not resolved. Kirigami-inspired and origami-inspired structures have been used in solar panel arrays for spacecraft, where the folding pattern allows a large surface to be packed into a small payload and deployed in space. The same principles appear in stent design, where folded structures expand inside blood vessels, and in robotics, where origami-inspired actuators produce movement through controlled folding.
Origami is closely related to kirigami, the Japanese art of cutting and folding paper, which allows cuts that origami prohibits. It connects to washi, traditional Japanese paper that is used in both folding and sumi-e ink painting. The mathematical dimension of origami links it to fractal art and generative art, where algorithms produce visual form. For more on paper as an art medium, read our post on paper art, or explore our guide to Japanese art to see how origami fits into the broader Japanese aesthetic tradition.
The Yoshizawa Origami Museum in Kaminokawa, Japan, holds the largest collection of Akira Yoshizawa's work. The Museum of Modern Art in New York holds curved-crease sculptures by Erik and Martin Demaine in its permanent collection, acquired through the 2008 Design and the Elastic Mind exhibition. The Cooper Union in New York hosted the first dedicated origami exhibition in the United States, Plane Geometry and Fancy Figures, in 1959.
For contemporary origami, OrigamiUSA holds an annual convention in New York that includes exhibitions of work by leading folders from around the world. To understand how origami connects to broader art and design, read our entries on kirigami and washi, or explore our post on paper art for a deeper look at how paper functions as a sculptural medium.
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