Justboy

{{Infobox song

| name = Justboy

| cover = Justboy.jpg

| alt =

| type = single

| artist = Biffy Clyro

| album = Blackened Sky

| B-side = {{ubl|Being Gabriel|Unsubtle}}

| released = 1 October 2001 (UK)

| recorded = The Practice Pad
Glasgow, Scotland

| studio =

| venue =

| genre = Alternative rock

| length = 4:23

| label = Beggars Banquet
BBQ335CD (UK, CD)
BBQ335 (UK, 7")

| writer = Simon Neil

| producer = Chris Sheldon

| prev_title = 27

| prev_year = 2000

| next_title = 57

| next_year = 2002

| misc = {{Extra track listing

| album = Blackened Sky

| type = single

| tracks =

1. "Joy.Discovery.Invention"
2. "27"
3. "Justboy"
4. "Kill the Old, Torture Their Young"
5. "The Go-Slow"
6. "Christopher's River"
7. "Convex, Concave"
8. "57"
9. "Hero Management"
10. "Solution Devices"
11. "Stress on the Sky"
12. "Scary Mary"

}}{{Extra track listing

| album = thekidswhopoptodaywillrocktomorrow

| type = single

| tracks =

1. "57"
2. "Hope for an Angel"
3. "Justboy"
4. "Less the Product"

}}

}}

"Justboy" is a song by Biffy Clyro from their 2002 debut album, Blackened Sky, released as the album's second single.