Rella may refer to:

• Rella, Bell County, Kentucky
• "Rella" (song), a song on Odd Future's 2012 album The OF Tape Vol. 2
• Rella Braithwaite (born 1923), Canadian author

• XERLK
• Xermamenil
• Xermaménil
• XERMX
• Xero (album)
• Xerobdellidae
• Xerochastic
• Xerochasy
• Xerochloa
• Xerochloa imberbis
• Xerochlora
• Xerochore
• Xerochrysum bicolor
• Xerochrysum papillosum
• Xerochrysum subundulatum
• Xerochrysum viscosum
• Xerociris
• Xerocladia
• Xerocnephasia
• Xerocole
• Xerocomellus chrysenteron
• Xerocomellus zelleri
• Xerocomus badius
• Xerocomus chrysenteron
• Xerocomus silwoodensis