
The push, called 'Think differently about autism', was created by charity direct marketing specialist Cascaid.
As well as the fresh strap-line, the organisation has changed the colours of its logo from blue and green to pink and purple.
The campaign includes direct response press ads, direct mail and an online viral push.
The NAS is also launching a new website. Created by Mystic Monkey, it will comprise videos and blogs.
Next spring, the NAS will be involved in a campaign to highlight the needs of adults with autism. Previous work has focused on children.
Cascaid created the brand identity and campaign following a six-month research project that looked at the charity's positioning.