.y - Bitmap image (subsampled raw YUV )
.y - Compressed Amiga soubor archive (Yabba)
.y - Grammar soubor (Unix Yacc)
.y01 - Paradox secondary index soubor
.y02 - Paradox secondary index soubor
.y03 - Paradox secondary index soubor
.y04 - Paradox secondary index soubor
.y05 - Paradox secondary index soubor
.y06 - Paradox secondary index soubor
.y07 - Paradox secondary index soubor
.y08 - Paradox secondary index soubor
.y09 - Paradox secondary index soubor
.yal - Arts & Letters clipart library
.yaodl - 3d Graphic
.yar - YAK archiv
.ybk - Microsoft Encarta Yearbook
.ybm - Bitmap image (Face soubor)
.yc - YACC archive
.ycc - 2d Graphic
.ycp - Image ASCII art
.ydl - Yet Another Object Deskription Language (Silicon Graphics Powerflip)
.yel - Yellow color separation. BLA (Black) CYA (Cyan), MAG (Magenta) Adobe Color Separation
.yg0 - Database Index : Paradox secondary index
.yg1 - Database Index : Paradox secondary index
.yg2 - Database Index : Paradox secondary index
.yg3 - Database Index : Paradox secondary index
.yg4 - Database Index : Paradox secondary index
.yif - Graphics (color with lookup table)
.ym - Atari ST Audio
.ymap - Ygnius Computer Aided Thinking soubor
.yn - Audio Utility Tuningwrench compressed soubor
.ynx - Midiprg Seqmax Seqprest compressed soubor
.yuv - Bitmap image (Abekas YUV SECAM or PAL soubor CCIR 601 1:1:1 soubor)
.yuv - YUV 16Bits image format
.yuv3 - Bitmap image (CCIR 601 2:1:1 soubor)
.yyc - Wave sapphire dist soubor
.yz - Compressed soubor archive (YAC)
.yz1 - Mime: application/x-yz1
