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Experimental limits on the width of the reported<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Θ</mml:mi><mml:mrow><mml:msup><mml:mrow><mml:mn /><mml:mo>(</mml:mo><mml:mn>1540</mml:mn><mml:mo>)</mml:mo><mml:mn /></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>
Using data on ${K}^{+}$ collisions on xenon and deuterium we derive values and limits on the width of the reported $\ensuremath{\Theta}{(1540)}^{+}$ exotic baryon resonance. The xenon experiment gives a width of $0.9\ifmmode\pm\else\textpm\fi{}0.3\mathrm{MeV}.$ The other experiments give upper limits in the range 1--4 MeV.