The Valley Flyer was a short-lived named passenger train of the Atchison, Topeka and Santa Fe Railway. The all-heavyweight, "semi-streamlined" train ran between Bakersfield and Oakland, California (through California's San Joaquin Valley on the railway's Valley Division, hence the name) during the 1939–1940 Golden Gate International Exposition on Treasure Island in San Francisco Bay. Motive power was two Baldwin-built 1300 class 4-6-2 "Pacific" locomotives refurbished and decorated for the train. It was the Santa Fe's first attempt at streamlining older steam power.

This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (April 2021)

The first run was on June 11, 1939. The train left Bakersfield daily at 6:30 a.m. PST and arrived in Oakland at 12:35 p.m., then returned at 1:55 p.m., pulling into Bakersfield at 8:00 p.m. Beginning on October 27, 1941, the Flyer cars (save for the lounge car) were used to transport troops as a section of the San Diegan on the Santa Fe's "Surf Line" between Los Angeles and San Diego. In 1942 the trainset was discontinued and the passenger cars returned to pool service, repainted Coach Green.

The 1337 class 4-6-2 pacifics #1369 and #1376 were de-streamlined and served the Santa Fe until the early 1950s with #1376 being scrapped in 1950 and #1369 heading off to the scrapyard in 1951.

The locomotives had metal skirting along the sides, painted aluminum (as were the nose and smokestack) with red and yellow stripes, these being outlined by black pinstripes; the tenders were similarly decorated. A yellow "Circle and Cross" emblem backed by red "wings" was emblazoned across the front of the locomotive above the pilot deck, and on each side of the tender, which also featured a red "wing." The air-conditioned rolling stock was painted aluminum with red and yellow stripes along their sills, bordered with black pinstripes (somewhat like Santa Fe's passenger diesel locomotives). Stripes on the combine unit split into two sets, with one set sweeping up to align with those on the locomotive tenders. Window shades were painted matte aluminum. The sides of the passenger cars bore "SANTA FE" in black, extra extended Railroad Roman letters. The design of the Valley Flyer's drumhead was inspired by that of its counterpart, the Golden Gate.

• Duke, Donald and Stan Kistler (1963). Santa Fe...Steel Rails through California. Golden West Books, San Marino, CA.
• Duke, Donald (1997). Santa Fe...The Railroad Gateway to the American West, Volume 1. Golden West Books, San Marino, CA. ISBN 0-87095-110-6.
• Hendrickson, Richard H. (1998). Santa Fe Railway Painting and Lettering Guide for Model Railroaders, Volume 1: Rolling Stock. The Santa Fe Railway Historical and Modeling Society, Inc., Highlands Ranch, CO.
• McGonigal, Robert S., ed. (2005). "Semi-streamlined steam stars." Streamliner Pioneers 51.
• Pelouze, Richard W. (1997). Trademarks of the Santa Fe Railway. The Santa Fe Railway Historical and Modeling Society, Inc., Highlands Ranch, CO.
• Worley, E. D. (1965). Iron Horses of the Santa Fe Trail. Southwest Railroad Historical Society.

• Passenger train service on the Atchison, Topeka and Santa Fe Railway

• San Joaquin (train) current Amtrak passenger service from Bakersfield to Oakland, and historical competitor Southern Pacific train.