The drivers of all three cars involved in a crash in Ogbourne St George were taken to hospital.
The crash happened at 11.35am yesterday on the A346 and involved a Ford Focus, a Peugeot 208 and an Audi Q3.
The drivers were taken to Great Western Hospital as a precaution.
Wiltshire Police are now appealing for witnesses and dashcam footage that can help them piece together what happened.
In a statement the force said: "We are keen to speak to anyone who witnessed the collision who has not already spoken to police, as well as anyone who may have dash cam footage of the collision.
"If you can help, please call 101 and quote crime reference number 54210117570."
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