Clean Air Express

{{Infobox Bus transit

| name = Clean Air Express

| logo =

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| parent = Santa Barbara County Association of Governments

| founded = 1991

| defunct =

| headquarters = 260 North San Antonio Road

| locale = Santa Barbara, California

| service_area = Santa Barbara County, California

| service_type = express bus service

| alliance =

| routes = 4

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| fleet =20 buses

| fuel_type =diesel, battery electric

| operator = AmericanStar Trailways[http://meetings.sbcag.org/Meetings/SBCAG/2017/11%2520Nov/Item%25206%2520CAE%2520Contractor%2520Staff%2520Report.pdf Clean Air Express Contractor and FY 2017/18 Budget]

| ceo =

| website = [http://www.cleanairexpress.com/default.htm Clean Air Express]

}}

The Clean Air Express provides commuter express bus service in portions of Santa Barbara County, California, with service between the cities of Santa Barbara, Lompoc, Santa Maria, and Goleta, California. In 1991, the service was formed to provide commuter service and to alleviate traffic congestion. The Clean Air Express is funded by Santa Barbara County Measure A funds.