Jachin may refer to:

• Jachin (biblical figure), a minor biblical figure
• The pillar in front of Solomon's Temple named after Jachin; see Boaz and Jachin

• 1949 Manchester Borough Council election
• 1949 Maryland Terrapins football team
• 1949 Meistaradeildin
• 1949 Menarsha synagogue attack
• 1949 Men's World Ice Hockey Championships
• 1949 Mercury
• 1949 mercury
• 1949 Messina
• 1949 Mestaruussarja
• 1949 Mexican legislative election
• 1949 Michigan Wolverines football team
• 1949 Minnesota Golden Gophers football team
• 1949 MLB season
• 1949 Montreal Alouettes season
• 1949 movie
• 1949 NAIA Division I Men's Basketball Tournament
• 1949 National Amateur Cup
• 1949 NBA Draft
• 1949 NBA Finals
• 1949 NBA Playoffs
• 1949 NCAA Division I-A football season
• 1949 NCAA football rankings
• 1949 NCAA Men's Basketball All-Americans
• 1949 NCAA Men's Division I Ice Hockey Tournament
• 1949 Nebraska Cornhuskers football team