If You’re Feeling Sinister is the second album by the Scottish indie pop band Belle and Sebastian. It was released in 1996 on Jeepster Records in the United Kingdom and in 1997 by Matador Records in the United States. It is often ranked among the best albums of the 1990s.

If You’re Feeling Sinister received critical acclaim. Pitchfork placed it at number 14 in its top 100 albums of the 1990s. Later, the readers of Pitchfork voted the album the 31st greatest album released between 1996 and 2011. Rolling Stone featured the album at number 75 on its list of “100 Best Albums of the Nineties,”while Spin included the record at number 59 on its “125 Best Albums of the Past 25 Years” list. If You’re Feeling Sinister also appears as an entry in the book 1001 Albums You Must Hear Before You Die as chosen by music critics. The album was placed at number 8 on The Village Voice’s Pazz & Jop annual critics’ poll for 1997. The album was ranked No. 481 of the Top 500 Albums of All Time by Rolling Stone in 2020.

In 2007, as part of the 33⅓ series, Scott Plagenhoef wrote a book about the album.

In February 2013, Pitchfork.tv released an hour-long documentary about the album directed by RJ Bentler. For the documentary, every band member who played on the album was interviewed. It featured archive photographs and videos from the band’s early days.

Reflecting on it 20 years on, Stereogum’s Tom Breihan claimed that Sinister could be “too influential”, despite it taking “a long time for [the band’s] influence to spread.” In time, their impact would “fully sink into the bloodstream of the indie rock world.” He saw the band’s timidity taken, “Americanized”, and introduced to a new audience in US college kids by American band Death Cab for Cutie. He also credited them with impacting the development of “sensitive and proudly bookish” indie stars like the Decemberists and Sufjan Stevens. Other groups that critics have noted Sinister inspiring include Alvvays, Hovvdy, Kings of Convenience, and the Shins.