The Pioneer Pub was a bar in Pike City on Cestus III. It was established in 2375, and named after the Pike City Pioneers of the Cestus Baseball League. The Pioneer Pub was popular amongst Pioneer fans, and regularly presented video feeds of Pioneer games during the baseball season.

The Pioneer Pub displayed numerous pieces of baseball memorabilia, both from the CBL and from earlier Earth-based leagues. These included:

• the jersey worn by Babe Ruth in 1914
• the glove used by Josh Gibson in 1930
• a home run ball hit by Buck Bokai in 2024
• the first home run ball in CBL play, hit by Aloysius McSweeney
• the uniform worn by Illyana Petrova in the final game of the first Cestus Series
• a fragment of Ruth Field damaged in a Gorn attack in 2374
• a broken bat used by Hugues Baptiste in a divisional championship game
• the glove worn by Blaithin Lipinski while pitching her fifth career perfect game

The bartender at the Pioneer Pub was a man named Gordon. The Pioneer Pub was known for its own Homebrew, which was only served following a Pioneer win. (ST novel: Articles of the Federation)