Runnel(s) may refer to:

• Runnel Stone, a hazardous rock pinnacle near Gwennap Head, Cornwall, United Kingdom
• Runnels, a surname
• Runnels County, Texas, United States
• A small stream
• A channel along the side of a bicycle stairway

• Trinidad (neighborhood)
• Trinidad newspapers
• Trinidad Regional Virus Laboratory
• Trinidad Romero
• Trinidad Roxas
• Trinidad spiny pocket mouse
• Trinidad spiny rat
• Trinidad station (Colorado)
• Trinidad Tarrosa-Subido
• Trinidad Theatre Workshop
• Trinidad/Tobago
• Trinidad& Tobago
• Trinidad & Tobago national rugby union team
• Trinidad & Tobago Rugby Football Union
• Trinidad & Tobago women's cricket team
• Trinidad Tree Boa
• Trinidad (TX)
• Trinidad, Washington
• Trinidad, Washington, DC
• Trinidad y Tobago
• Trinil
• Trinil 2
• Trinil tiger
• Trininite
• Trinita dei Monti