Virtually the only example of painting in Rome and Latium to have survived from before the 1st century bc is a fragment of a historical tomb painting with scenes from the Samnite Wars, found in a family tomb on the Esquiline and probably dating from the 3rd century bc (Palazzo dei Conservatori, Capitoline Museums, Rome). In addition to Metrodorus and Demetrius, ancient writers mention the names of three painters, each of whom worked in a temple: Fabius Pictor, in the Temple of Salus in Rome at the end of the 4th century; Pacuvius, a dramatist and native of Brundisium, in the Temple of Hercules in the Forum Boarium in Rome during the first half of the 2nd century; and Lycon, an Asiatic Greek, in the Temple of Juno at Ardea in the late 3rd or early 2nd century. Nothing is known about the work of these artists.

At Pompeii during the 2nd century bc the interior walls of private houses were decorated in a so-called Incrustation, or First, style; that is, the imitation in painted stucco of veneers, or crustae (“slabs”), of coloured marbles. But in the second half of the 1st century bc, there suddenly appeared in Rome and in the Campanian cities (the most famous of which is probably Pompeii) a brilliant series of domestic mural paintings of the so-called Second style, the aim of which was to deny the walls as solid surfaces confining the room space. This was sometimes done by covering the whole area of the walls with elaborate landscapes, in which depth, atmosphere, and light are rendered in a highly pictorial, illusionistic manner. Such are the Odyssey paintings found in a Roman house on the Esquiline (now in the Biblioteca Apostolica Vaticana, Vatican City), which consist of a continuous flow of episodes that unfold, filmlike, beyond a colonnade of pilasters, with vertical, bird’s-eye-view perspective and human figures strictly subordinated to their settings. Other wall paintings, such as those in a room from Livia’s Villa at Prima Porta (transferred to the Museo Nazionale Romano), represent a great park or garden filled with trees, shrubs, flowers, and birds, with no pilasters in the foreground to interrupt the prospect and no human figures to distract attention.

The possibility of Hellenistic models for this type of painting has already been mentioned, though the surviving Hellenistic precursors were no preparation for the important Roman developments. Most examples of the type, which survived into the Fourth style, have been found on the back walls of the colonnades running around real gardens. The cool painted scenes would have given the illusion that an idler in this part of the house was surrounded by shrubs or groves of trees. Another type of landscape combined sacred and idyllic features and was often placed as though behind elaborate stage buildings. These monotone compositions held sacred columns or rustic shrines and were closely related to other illusionistic scenes peopled with little figures whose antics, the written sources make clear, were a source of endless amusement for the householder and his guests.

A celebrated frieze of life-size figures, depicting Dionysiac initiation rites and the prenuptial ordeals of a bride, in the so-called triclinium of the Villa of the Mysteries (or Villa Item) outside the Herculaneum gate of Pompeii, also belongs to the Second style. There the walls are denied by the device of substituting for them a narrow stage on which the figures carry out the ritual before a drop scene of continuous painted panels. But the most common Second-style paintings are known as Architectural and show a threefold horizontal division of the wall into dado, central area, and cornice, combined with a triple vertical scheme of design that consists of a large central panel (in the main, intermediate horizontal area), framed by flanking columns and a pediment, and two smaller panels on either side. The central panel and often the lateral panels as well are views seen through windows that break through the walls and link the spectator with the world outside, as in the house of Augustus on the Palatine in Rome.

In the Third style, which covers most of the Augustan period, the central panel picture on a wall is no longer thought of as a scene through a window but as a real picture hung on or inserted into a screen or woven into a tapestry, which partially conceals an architectural vista behind it. The columns, entablatures, and so on are completely unreal and so complicated that this Third style is sometimes dubbed Ornate.

The Fourth style, which runs from the close of the Augustan Age to the destruction of Pompeii and its fellow Campanian cities in bc 79, is less homogeneous than its predecessors and exhibits three main variants: first, an architectural design soberer and more realistic but still with a central screen or tapestry partly covering a retreating vista; second, an architectural layout that imitates a scaena (“stage background”); and third, a method (sometimes known as “intricate”) by which the whole surface of the wall is covered with a flat, white, neutral ground painted with an allover, latticelike pattern of fantastic architectural elements, arabesques, grotesques, small figure motifs, or small panels containing pictures. This third type of Fourth-style painting came into vogue at Pompeii between an earthquake of ad 63 and the catastrophic volcanic eruption of 79, and one of its most impressive exponents is the Golden House of Nero in Rome.

The subjects of the panel pictures of the Second, Third, and Fourth styles are for the most part drawn from Greek mythology. Some of them recall literary descriptions of famous classical Greek and Hellenistic paintings or show motifs that suggest their originals were painted on the Greek mainland or in Asia Minor. It is certain that many masterpieces of Greek painting did make their way to Rome as the booty of Roman generals of republican days, and wall painters could have studied them at first hand. But often those artists must have had to rely only on sketches of the celebrated pictures, and it is not known how faithfully the Roman and Campanian murals reproduce the prototypes. Other panel pictures present scenes from contemporary religious ritual, and a few show themes from Roman legend. Frequently, in the case of the Greek mythological subjects and those taken from rustic religious cults, the artist produced landscape with figures, as in the Odyssey frescoes, not figures with landscape, as on Trajan’s Column. These late republican and early imperial set pieces are competently executed, remarkably vivid, and extremely naturalistic. But, with a few exceptions, they reveal that the principles of a single vanishing point and unified lighting from a single source of illumination either were not understood by Roman painters or did not interest them.

The flat, uniform background of the last phase of the Fourth style remained a constant feature of mural painting in houses, tombs, temples, and other religious shrines throughout the 2nd, 3rd, and 4th centuries. The decoration, which stands out against that ground, takes any of several forms: (1) latticelike, allover patterns, as in many pagan tombs; (2) small groups of figures or figure panels spread out at intervals across the field, as in the Christian catacombs of Rome; (3) a mixture of large human figures and extensive scenes with small-scale figures, as in the early 3rd-century Hypogeum of the Aurelii on the Viale Manzoni in Rome, the interesting painted content of which is Gnostic or crypto-Christian; or (4) large scenes with relatively large figures, such as a group of marine deities in a 2nd-century Roman house under the Church of SS. John and Paul on the Caelian, a late 2nd- or early 3rd-century leopard hunt on the south wall of the frigidarium of the hunting baths at Leptis Magna (on the coast of modern Libya), or the early 3rd-century biblical scenes from a baptistery at Doura-Europus, an important archaeological site on the Euphrates in what is now Syria.

In the case of the Roman tombs, cross- or barrel-vaulted ceilings, where preserved, normally carry out the painted decoration of the walls, showing either a latticelike pattern or a series of small, spaced-out, figured panel pictures. At Trier (in what is now West Germany) remains have been found of a flat, coffered ceiling with panels of painted plaster from an early 4th-century imperial hall destroyed to make room for a Christian basilica. Large portions of eight painted panels are preserved. Four depict female busts—three of them with nimbi—which may be either personifications or portraits of members of the imperial family; the other four show pairs of dancing or sporting cupids. As the skillful modeling and lively naturalism of these figures show, late Roman painting could reach high standards.

Roman portrait painting comes only a short way behind portrait sculpture in technical skill and realism. One of the earliest extant examples is a group of Terentius Neo and his wife, from Pompeii (National Archaeological Museum, Naples). Both figures recall mummy portraits in Egypt, being painted in encaustic (a technique by which colours are mixed with liquid wax and fixed by heat) and ranging in date from the Flavian period to the 3rd century. A circular portrait group of frontal figures painted on wood, probably in Egypt (now in the Staatliche Museen Preussischer Kulturbesitz, West Berlin), seems to have originally depicted the emperors Septimius Severus and Caracalla, Julia Domna (Septimius Severus’ wife), and Geta (Caracalla’s brother); but Geta (so it seems) was subsequently washed out (perhaps most consequent upon his murder by Caracalla). Particularly attractive are the portraits done on gold-glass medallions, which in the exquisite refinement of their treatment may be compared to 16th-century European miniatures. A medallion in the Museum of Christian Antiquities, Brescia, dating from the 3rd century and carrying a portrait group, is a veritable masterpiece.