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The Sacagawea dollar (also known as the "golden dollar") is a United States dollar coin that has been minted every year since 2000, although not released for general circulation from 2002 through 2008 and again from 2012 onward.

These coins have a copper core clad by manganese brass, giving them a distinctive golden color. The coins were struck in Philadelphia, Denver, San Francisco, and West PointMint.

In 1999, the Mint struck a number of Sacagawea dollars in .9167 fine (22-karat) gold. Similar gold coins were also struck, this time bearing the denomination of one dollar and a "W" mint mark, signifying that the coins were struck at the West Point Mint.  In total, 39 such coins were struck, twelve of which were found to be of adequate quality, while the rest were eventually destroyed. The reverse of each coin bears an original tail feather design that was replaced later in the year. The dies for the Gold Proofs were prepared with Thomas D. Rogers, Sr.'s original reverse design featuring 12tail feathers.  Circulation strikes from other mints have 13 tailfeathers. The same tail feather design will appear later in Cheerios boxes (see explanation in next paragraph). The one-dollar pieces were "struck to commemorate the historic flight of the Space Shuttle Columbia in July 1999", according to Former Mint Director Ed Moy. The twelve surviving golddollars were sent into space aboard Columbia on missionSTS-93 in July 1999. Following the return of the shuttle, the coins were placed in storage at Fort Knox, where they remained until 2007, when they were exhibited at the American Numismatic Association World's Fair of Money in Milwaukee, Wisconsin. After the event, the coins were returned to Fort Knox; however, the Mint is currently planning to loan the coins to various museums throughout the country.

The coin features an obverse by Glenna Goodacre. For her work creating the obverse of the Sacagawea dollar, Good acre received a $5,000 commission; she requested that it be paid in dollar coins. The 2000-P dollars paid to Goodacre were struck on specially burnished blanks to give them a unique finish. These coins are extra special and are different than the rest of the 2000 Sacagawea Dollars.

Goodacre sent all 5000 coins to the Independent Coin Grading Company (ICG) to have them certified and sealed to preserve them. Each coin was individually numbered. ICGgraders believed that some of the presentation coins missed the burnishing treatment. Goodacre sold to the public 3,000 coins for $200 each and kept the remainder for herself.

The new dollar coin was heavily marketed by the Mint in a series of print, radio, and television advertisements, as well as Mint partnerships with Walmart and Cheerios. During this time, the Mint began a partnership with the General Mills company, in which 10,000,000 boxes of Cheerios cereal would contain a 2000-dated Lincoln cent as a prize, one in every 2,000 boxes would contain a new Sacagawea dollar and one in every 4,400would hold a certificate redeemable for 100 Sacagawea dollars. It was later discovered that the dollars included in every 2,000 boxes were in fact early strikes, differing from those ultimately issued for circulation by the number of tail feathers on the eagle(Cheerios Dollar). Approximately 5,500 of the coins were included in the boxes of cereal.

From 2000 to 2008, the reverse featured an eagle design by Thomas D. Rogers.

2008 S- Proof has the lowest mintage in the proof dollar series2000-2008.

In 2010 - A dealer Jeff Garrett, owner of Mid-American RareCoin Galleries acquired the remaining coins from Goodacre. These ICG-graded coins were sent to PCGS and put into plastic holders with a special label bearing the signature of Philip N. Diehl - the Director of the US Mint at the timeGoodacre designed the coin. Some of these coins have been signed by Glenna Goodacre herself - with the signature featured on the outside of the plastic holder. Garrett has since dispersed the PCGS-encapsulated coins into the market through dealers, except for a small number he retained for his personal collection. Some of the top-graded examples have sold for as much as $1,000 each.