New Orleans Blues may refer to:

• "New Orleans Blues", the 1925 composition by Jelly Roll Morton (see Spanish Tinge)
• New Orleans rhythm and blues, a genre of music from New Orleans, Louisiana
• Louisiana Blues, an American basketball team
• "Louisiana Blues," a song by Bonnie Raitt and Little Feat

• 3 Trapped Tigers
• 3 Trianguli
• 3 (Tricot album)
• 3 (Tricot Album)
• 3-Trifluoromethyl-(4-cyano)-aniline
• 3-trifluoromethyl-(4-cyano)aniline
• 3-trifluoromethyl-(4-cyano)-aniline
• 3-trifluoromethyl-4-cyanoaniline
• 3-Trifluoromethyl-4-cyanoaniline
• 3-Trifluoromethyl-(4-cyano)aniline
• 3-triphenylmethyl-6-diphenylmethylidene-1,4-cyclohexadiene
• 3, Triq ix-Xatt
• 3TU
• 3 (Tubeless Hearts album)
• 3U 1956+35
• 3 (U2 EP)
• 3U CubeSat
• 3 UDR
• 3UR-FBE
• 3UR-FE
• 3 Ursae Majoris
• 3 U.S. 184
• 3 U.S. 199
• 3 U.S. 331
• 3 U.S. 411