James Clancy (born December 18, 1955) is a former starting pitcher in Major League Baseball who played for the Toronto Blue Jays (1977–88), Houston Astros (1989–91) and Atlanta Braves (1991).

Clancy played rookie level baseball with the Rangers Gulf Coast League team, where he had a record of 3–3 with a 2.72 ERA in nine starts.

The 1985 season would be injury plagued, however, Clancy pitched effectively, earning a 9–6 record and a 3.78 ERA as Toronto made the post-season for the first time in team history.

He made his Astros debut on April 8, 1989, pitching 8.1 innings and allowing two runs in a 6–2 win over the San Diego Padres at The Astrodome.

Clancy split time between starting and working out of the bullpen in 1990, where he struggled with a 2–8 record and a 6.51 ERA, and had a stint with the Tucson Toros, the Astros AAA affiliate in the Pacific Coast League.

In the 1991 NLCS, Clancy made only one appearance, getting the only batter out that he faced as the Braves defeated the Pittsburgh Pirates to earn a spot in the World Series.

Clancy became a free agent after the season, and signed a minor league deal with the Chicago Cubs, but he retired during spring training in 1992.