''Modesty Blaise'' is a 1966 comedy action/SpyFiction film directed by Joseph Losey. It stars Monica Vitti as Modesty Blaise, Terence Stamp as Willie Garvin, and Dirk Bogarde as the villain, Gabriel.

The film is loosely based on the ''ComicStrip/ModestyBlaise'' comic strip created and written by Peter O'Donnell. O'Donnell wrote the scenario for the movie, but the screenplay went through multiple rewrites and the end result differs significantly from the original. Changes range from the relatively trivial, such as hair colour, to a change that horrified the comic strip's fanbase: PlatonicLifePartners Modesty and Willie falling in love and deciding to get married.

The storyline is as follows: Modesty, a secret agent whose hair color, hair style, and mod clothing change at a snap of her fingers, is being used by the British government as a decoy in an effort to thwart a diamond heist. She is being set up by the feds but is wise to the plot and calls in sidekick Willie and a few other friends to outsmart them. Meanwhile, at his island hideaway, Gabriel, the diamond thief, has his own plans for Blaise and Garvin.

O'Donnell wrote [[Literature/ModestyBlaise a novel based on his version of the screenplay]], which (unlike the film) was successful and led to many sequels.

Quentin Tarantino is a fan of both the comic strip and this movie (in the case of the latter, the look of Modesty influenced the look of the DIVAS in ''Film/KillBill''). He also gave his name ("Quentin Tarantino Presents...") to a Modesty Blaise movie released in 2004.
!!This film provides examples of:

* AdaptationDyeJob: Modesty is blonde and Willie isn't, the reverse of their hair colours in the comic strip. She does change it to her original colour in a couple of scenes, perhaps as a form of lampshading.
* ArabOilSheikh: Abu Tahir, who [[ItMakesSenseInContext adopted Modesty as his "son"]].
* {{Camp}}: The high type.
* TheCavalry: [[spoiler:The charge at the end done by Abu Tahir and his troops.]]
* AGlassOfChianti: Gabriel lounges with a glass of ''blue'' wine while dispensing his evil orders.
* KnifeFight: In Amsterdam, both Modesty and Willie end up fighting an opponent with knives at the same time.
* LeaningOnTheFourthWall: This exchange:
-->'''Gabriel''': I am the villain of the piece. I have to condemn you.\\
'''Modesty Blaise''': But I am the heroine. Don't I get away?\\
'''Gabriel''': Perhaps.
** At one point images of the real-life ''Modesty Blaise'' comic strip are shown.
* ProtagonistTitle
* PsychoForHire: Mrs. Fothergill. She likes to submit her "minions" to physical exercise and enjoys killing a mime and throwing him off a cliff (it doesn't make much sense in context, anyway).
* RelationshipUpgrade: Modesty and Willie. And the action comes to a halt while they do a song and dance number about it.
* SceneryPorn: For fans of architecture, the opening credits that play out over images of classic '60s building lines is as good as Playboy.
* SissyVillain: Gabriel. '''So much'''.
* VolleyingInsults: During the period of "truce" between Modesty and Gabriel:
-->'''Gabriel''': Suffragette!\\
'''Modesty Blaise''': Psychopath!