Monte Carlo (/ˌmɒnti ˈkɑːrloʊ/ MON-tee KAR-loh, Italian: [ˈmonte ˈkarlo]; French: Monte-Carlo, French: [mɔ̃te kaʁlo]; or colloquially Monte-Carl, French: [mɔ̃te kaʁl]; Monégasque: Munte Carlu, Ligurian: [ˈmuŋte ˈkaɾlu]; lit. 'Mount Charles') is an official administrative area of Monaco, specifically the ward of Monte Carlo/Spélugues, where the Monte Carlo Casino is located. Informally, the name also refers to a larger district, the Monte Carlo Quarter (corresponding to the former municipality of Monte Carlo), which besides Monte Carlo/Spélugues also includes the wards of La Rousse/Saint Roman, Larvotto/Bas Moulins and Saint Michel. The permanent population of the ward of Monte Carlo is about 3,500, while that of the quarter is about 15,000. Monaco has four traditional quarters. From west to east they are: Fontvieille (the newest), Monaco-Ville (the oldest), La Condamine, and Monte Carlo.

Monte Carlo is situated on a prominent escarpment at the base of the Maritime Alps along the French Riviera. Near the quarter's western end is the "world-famous Place du Casino, the gambling center ... that has made Monte Carlo an international byword for the extravagant display and reckless dispersal of wealth". It is also the location of the Hôtel de Paris, Café de Paris and Salle Garnier (the casino theatre which is the home of the Opéra de Monte-Carlo). The quarter's eastern part includes the community of Larvotto with Monaco's only public beach, as well as its new convention center (the Grimaldi Forum), and the Monte-Carlo Bay Hotel & Resort. At the quarter's eastern border, one crosses into the French town of Beausoleil (sometimes referred to as Monte-Carlo-Supérieur), and 8 kilometres (5 mi) to its east is the western border of Italy.

In 1856, Charles III of Monaco granted a concession to Napoleon Langlois and Albert Aubert, to establish a sea-bathing facility for the treatment of various diseases, and to build a German-style casino.

The initial casino opened in La Condamine in 1862, but was unsuccessful. It relocated several times, before reaching its present location in the "Les Spélugues" (The Caves) area of Monte Carlo. Success came slowly, largely because Monaco was inaccessible from much of Europe. The railway, installed in 1868, brought with it an influx of people, and Monte Carlo grew in wealth.

Saint-Charles Church on Monte Carlo's Avenue Sainte-Charles was completed in 1883. It was restored in its centenary year.

The municipality of Monte Carlo was created in 1911, when the constitution divided the principality of Monaco into three municipalities. Monte Carlo encompassed the existing neighborhoods of La Rousse/Saint Roman, Larvotto/Bas Moulins, and Saint Michel. The municipalities merged in 1917, after accusations that the government used them to "divide and conquer". Since then, they became wards. Today, Monaco is divided into 9 wards, which are grouped into 4 quartiers.

The quarter of Monte Carlo was served by tramways from 1898 to 1931. It linked all parts of Monaco (see transportation in Monaco). In 2003 a new cruise ship pier was completed in the harbour at Monte Carlo.

Monte Carlo has an area of 28.14 hectares (or 0.28 square kilometers) and faces the Mediterranean Sea, bordered to the west by Ravin de Sainte-Dévote and La Condamine, and to the east by La Rousse and Larvotto.

Monte Carlo has a hot-summer Mediterranean climate (Köppen climate classification: Csa), which is influenced by oceanic climate and humid subtropical climate. As a result, it has warm, dry summers and mild, rainy winters.

Climate data for Monte Carlo
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Average sea temperature °C (°F)	13.4 (56.2)	13.0 (55.5)	13.4 (56.1)	14.6 (58.4)	18.0 (64.3)	21.8 (71.3)	23.1 (73.6)	23.6 (74.4)	22.2 (71.9)	19.6 (67.2)	17.4 (63.3)	14.9 (58.9)	17.9 (64.3)
Mean daily daylight hours	9.0	10.0	12.0	13.0	15.0	15.0	15.0	14.0	12.0	11.0	10.0	9.0	12.1
Average Ultraviolet index	1	2	4	5	7	8	8	7	5	3	2	1	4.4
Source: Weather Atlas

Monte Carlo is home to an ATP Masters 1000 tennis tournament during the clay court season usually played during the end of March through mid to late April. Monte Carlo is a popular tax haven for many tennis professionals and home to many active and retired athletes. Monte Carlo is host to most of the Circuit de Monaco, on which the Formula One Monaco Grand Prix takes place. It also hosts world championship boxing bouts, the European Poker Tour Grand Final and the World Backgammon Championship as well as the Monaco International Auto Show (Fr: Salon International de l'Automobile de Monaco), fashion shows and other events. Although the Monte Carlo Masters tennis tournament is billed as taking place in the community, its actual location is in the adjacent French commune of Roquebrune-Cap-Martin. The Monte Carlo Rally is one of the longest running and most respected car rallies; from 1973 to 2008 and again from 2012, it marks the start of World Rally Championship season, having also served as the curtain-raiser for the Intercontinental Rally Challenge between 2009 and 2011. The rally, however, takes place outside the Monte Carlo quarter and is run mostly on French roads.

Monte Carlo has been visited by royalty as well as the public and movie stars for decades. Monte Carlo is one of Europe's leading tourist resorts, although many of the key tourist destinations are in other parts of Monaco, including such attractions as Monaco Cathedral, the Napoleon Museum, the Oceanographic Museum and aquarium, and the Prince's Palace, all of which are in Monaco-Ville.

The Opéra de Monte-Carlo or Salle Garnier was built to designs of the architect Charles Garnier, who also designed the Paris opera house now known as the Palais Garnier. Although much smaller, the Salle Garnier is very similar in style with decorations in red and gold, and frescoes and sculptures all around the auditorium. It was inaugurated on 25 January 1879 with a performance by Sarah Bernhardt dressed as a nymph. The first opera performed there was Robert Planquette's Le Chevalier Gaston on 8 February 1879, and that was followed by three more in the first season.

Other famous twentieth-century singers to appear at Monte Carlo included Titta Ruffo, Geraldine Farrar, Mary Garden, Tito Schipa, Beniamino Gigli, Claudia Muzio, Georges Thill, and Lily Pons.

The Hôtel de Paris, established in 1864 by Charles III of Monaco, is located on the west side of the Place du Casino in the heart of Monte Carlo. It belongs to the Société des bains de mer de Monaco (SBM), and is part of the elite Palace Grand Hotels in Monaco with the Hotel Hermitage, the Monte-Carlo Beach Hotel, Monte-Carlo Bay Hotel & Resort, the Hotel Metropole and Fairmont hotel.

The hotel has 106 rooms divided into four groups based on type of view, decoration and luxury. The Exclusive City View offers 20 rooms, the Superior Courtyard has 29 large rooms, the Exclusive Sea View 59 and the Exclusive Casino has six.

Additionally, there are 74 suites and junior suites which are grouped similarly, offering more luxury than the rooms. There are single and double suites as well as courtyard junior suites and Sea/Casino Junior suites. There is also one Presidential suite.

In October 2014, a renovation project began, to create a garden courtyard, add a new spa, fitness and pool area, exceptional suites, and a “rooftop villa” with a private garden and pool.

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Monte Carlo has been the setting of many films, books, television shows, and video games.

• Foolish Wives (1922), although it was filmed in California.
• Rebecca (1940), an Alfred Hitchcock film with Monte Carlo and its famous casino as the setting, starring Laurence Olivier and Joan Fontaine.
• To Catch a Thief (1954), an Alfred Hitchcock film with Monte Carlo and its famous casino as the setting, starring Cary Grant and Grace Kelly, the future Princess Grace of Monaco.
• Grand Prix (1966), starring James Garner, Eva Marie Saint, and Yves Montand.
• Monte Carlo or Bust! (1969) also known by its American title, Those Daring Young Men in Their Jaunty Jalopies starring Tony Curtis & Terry Thomas.
• Herbie Goes to Monte Carlo (1977) starring Dean Jones & Don Knotts.
• The James Bond films Never Say Never Again (1983), and GoldenEye (1995) feature the Monte Carlo Casino.
• Once Upon a Crime (1992) The plot revolves around a series of couples in Monte Carlo, Monaco.
• I Spy (2002)
• Iron Man 2 (2010) features the Monaco Grand Prix.
• Monte Carlo (2011)
• The DreamWorks film, Madagascar 3: Europe's Most Wanted (2012), features the Monte Carlo Casino.
• A Ghost in Monte Carlo (1990), a Barbara Cartland TV movie starring Christopher Plummer, Oliver Reed, Lysette Anthony.
• Rebecca (2020), a Netflix production with Lily James, Armie Hammer and Kristin Scott Thomas as main characters.

• Monte Carlo is featured in Edith Wharton's novel The House of Mirth (1905) as a backdrop for the leisure activities of New York's upper class in the early 20th century.
• The first few chapters of the Gothic novel Rebecca (1938) are set in Monte Carlo.

• The Prince and Princess of Monte Carlo are characters in the Savoy opera The Grand Duke (1896) by Gilbert and Sullivan.
• Monte Carlo is an Edwardian musical comedy in two acts with a book by Sidney Carlton, music by Howard Talbot and lyrics by Harry Greenbank first performed in 1896.
• La Dame de Monte Carlo is a monologue for soprano and orchestra composed by Francis Poulenc in 1961 based on a poem from Jean Cocteau’s Théâtre de poche.
• "Monte Carlo Nights" is a song by Grover Washington Jr composed in 2001.
• "Goin' Down To Monte Carlo" is a song by Van Morrison composed in 2012.
• The Austrian musician Money Boy dedicated his song, "Monte Carlo" (2017), to Monte Carlo.

• In the British private detective series, Randall and Hopkirk (Deceased), the eleventh episode, "The Ghost who Saved the Bank at Monte Carlo" (1969), is set in Monte Carlo.
• The Bold and the Beautiful series (1987–) featured a number of episodes filmed on location in the city in 2016 and 2017. It is the location for the annual Spencer Summit.

• The Gran Turismo series often features Monte Carlo.
• The indie game Monaco: What's Yours is Mine
• The 1992 point-and-click game Indiana Jones and the Fate of Atlantis
• Various Formula One video games features the historic Circuit de Monaco
• The DiRT series features Monte Carlo as rally stages.

James Bond 007: Blood Stone features a level set in Monte Carlo

Monaco's twin cities are:

Ostend, Belgium since 1958

Macau, China since 1992

Lucciana, Corsica, France since 2009

Campagna, Campania, Italy since 2015

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  Monte-Carlo at night from the pier
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  Place du Casino, Monte Carlo
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  Hotel de Paris, Monaco
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  Interior of Hotel Hermitage Monte Carlo
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  Buildings
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  Monte Carlo

• Chevrolet Monte Carlo – a two-door coupé produced by Chevrolet for six generations
• Municipality of Monaco
• Monaco Heliport
• Monte Carlo method
• Monte Carlo Resort and Casino – hotel and casino in Paradise, Nevada, on the Las Vegas Strip.
• Radio Monte Carlo
• Télé Monte Carlo

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