Post-Impressionism is the term coined by the British artist and art critic Roger Fry in 1910 to describe the development of French art since Manet. Fry used the term when he organized the 1910 exhibition Manet and the Post-Impressionists. Post-Impressionists extended Impressionism while rejecting its limitations: they continued using vivid colours, thick application of paint, distinctive brush strokes, and real-life subject matter, but they were more inclined to emphasize geometric forms, to distort form for expressive effect, and to use unnatural or arbitrary colour.

The Post-Impressionists were dissatisfied with the triviality of subject matter and the loss of structure in Impressionist paintings, though they did not agree on the way forward. Georges Seurat and his followers concerned themselves with Pointillism, the systematic use of tiny dots of colour. Paul Cézanne set out to restore a sense of order and structure to painting, to "make of Impressionism something solid and durable, like the art of the museums". He achieved this by reducing objects to their basic shapes while retaining the bright fresh colours of Impressionism. The Impressionist Camille Pissarro experimented with Neo-Impressionist ideas between the mid 1880s and the early 1890s. Discontented with what he referred to as romantic Impressionism, he investigated Pointillism which he called scientific Impressionism before returning to a purer Impressionism in the last decade of his life.Vincent van Gogh used colour and vibrant swirling brush strokes to convey his feelings and his state of mind. Although they often exhibited together, Post-Impressionist artists were not in agreement concerning a cohesive movement. Younger painters during the 1890s and early 20th century worked in geographically disparate regions and in various stylistic categories, such as Fauvism and Cubism.

Vincent Willem van Gogh (UK  /ˌvæn ˈɡɒx/, US /ˌvæn ˈɡoʊ/;Dutch: [vɑŋ ˈɣɔχ] ( listen); 30 March 1853 – 29 July 1890) was a Dutch post-Impressionist painter whose work, notable for its rough beauty, emotional honesty, and bold color, had a far-reaching influence on 20th-century art. After years of painful anxiety and frequent bouts of mental illness, he died at the age of 37 from a gunshot wound, generally accepted to be self-inflicted (although no gun was ever found). His work was then known to only a handful of people and appreciated by fewer still.

Van Gogh began to draw as a child, and he continued to draw throughout the years that led up to his decision to become an artist. He did not begin painting until his late twenties, completing many of his best-known works during the last two years of his life. In just over a decade, he produced more than 2,100 artworks, consisting of 860 oil paintings and more than 1,300 watercolors, drawings, sketches and prints. His work included self portraits, landscapes, still lifes of flowers, portraits and paintings of cypresses, wheat fields and sunflowers.

Henri Julien Félix Rousseau (French pronunciation: [ɑ̃ʁi ʒyljɑ̃ feliks ruso]) (May 21, 1844 – September 2, 1910) was a French Post-Impressionist painter in the Naïve or Primitive manner. He was also known as Le Douanier (the customs officer), a humorous description of his occupation as a toll collector. Ridiculed during his life, he came to be recognized as a self-taught genius whose works are of high artistic quality.

Henri Rousseau was born in Laval, France in 1844 in the Loire Valley into the family of a tinsmith. He attended Laval High School as a day student and then as a boarder, after his father became a debtor and his parents had to leave the town upon the seizure of their house. He was mediocre in some subjects at the high school but won prizes for drawing and music. He worked for a lawyer and studied law, but "attempted a small perjury and sought refuge in the army," serving for four years, starting in 1863. With his father's death, Rousseau moved to Paris in 1868 to support his widowed mother as a government employee. In 1868, he married Clémence Boitard, his landlord's 15 year-old daughter, with whom he had six children (only one survived). In 1871, he was appointed as a collector of the octroi tax on goods entering Paris. His wife died in 1888 and he married Josephine Noury in 1898. He started painting seriously in his early forties, and by age 49 he retired from his job to work on his art full time.

Paul Cézanne (US  /seɪˈzæn/ or UK /sɨˈzæn/; French: [pɔl sezan]; 1839–1906) was a French artist and Post-Impressionist painter whose work laid the foundations of the transition from the 19th century conception of artistic endeavour to a new and radically different world of art in the 20th century. Cézanne can be said to form the bridge between late 19th century Impressionism and the early 20th century's new line of artistic enquiry, Cubism. The line attributed to both Matisse and Picasso that Cézanne "is the father of us all" cannot be easily dismissed.

Cézanne's often repetitive, sensitive and exploratory brushstrokes are highly characteristic and clearly recognizable. He used planes of colour and small brushstrokes that build up to form complex fields, at once both a direct expression of the sensations of the observing eye and an abstraction from observed nature. The paintings convey Cézanne's intense study of his subjects, a searching gaze and a dogged struggle to deal with the complexity of human visual perception.