Yes. In association football (soccer), a specific kind of mark is allowed outside the boundary of the field of play.

Short direct answer

A mark may be made outside the boundary lines, but only in the limited case explicitly allowed by the Laws of the Game: the small 9.15 m (10 yd) “optional mark” near each corner, used to help enforce the distance at corner kicks. Any other marks on or around the field that are not authorised are not permitted.

What the Laws say

  • The field of play must be marked only with the lines and marks listed in Law 1 (Field of Play). These include touchlines, goal lines, halfway line, centre mark and circle, penalty area lines, penalty mark, penalty arc, and corner arcs.
  • Law 1 also allows optional marks off the field of play , 9.15 m (10 yd) from the corner arc, at right angles to the touchline and goal line, to help the referee and players keep the correct distance at a corner kick.

So, this is the one clear case where a mark outside the boundary of the field is explicitly authorised.

Unauthorised marks

  • Law 1 states that only the lines and marks indicated in the Law may be used on the field of play.
  • A player who makes unauthorised marks on the field (for example, scraping or drawing their own guide marks) must be cautioned for unsporting behaviour when the ball is next out of play.

This principle extends to any extra, informal markings: if they are not part of the official markings specified in Law 1 (including that optional off‑field 9.15 m mark), they are considered unauthorised.

Practical takeaway

  • Allowed:
    • The standard boundary lines and all other official field markings.
    • The small “9.15 m” optional marks off the field near the corners.
  • Not allowed:
    • Extra painted lines, chalk, cones, or player-made scratches that are not listed in Law 1.
    • Players carving or drawing personal reference marks; this leads to a yellow card for unsporting behaviour.

In simple terms: you can have the specific optional 9.15 m mark outside the boundary near the corner, but you cannot randomly add other marks outside (or on) the field unless they are explicitly allowed by Law 1.

Meta description (SEO):
Learn whether a mark can be made outside the boundary of the field of play under the IFAB Laws of the Game, including the special 9.15 m corner mark and what counts as an unauthorised marking.

TL;DR:
A mark can be made outside the boundary only in the form of the officially allowed 9.15 m (10 yd) optional mark near the corner; any other added markings are not permitted and may result in a caution.

Information gathered from public forums or data available on the internet and portrayed here.