Display screen or portion thereof with icon

FIG. 1 is a front view of a display screen or portion thereof with icon, showing our new design;

FIG. 2 is a front view of a second embodiment thereof;

FIG. 3 is a front view of a third embodiment thereof;

FIG. 4 is a front view of a fourth embodiment thereof;

FIG. 5 is a front view of a fifth embodiment thereof;

FIG. 6 is a front view of a sixth embodiment thereof;

FIG. 7 is a front view of a seventh embodiment thereof;

FIG. 8 is a front view of an eighth embodiment thereof;

FIG. 9 is a front view of a ninth embodiment thereof;

FIG. 10 is a front view of a tenth embodiment thereof;

FIG. 11 is a front view of an eleventh embodiment thereof;

FIG. 12 is a front view of a twelfth embodiment thereof;

FIG. 13 is a front view of a thirteenth embodiment thereof;

FIG. 14 is a front view of a fourteenth embodiment thereof;

FIG. 15 is a front view of a fifteenth embodiment thereof;

FIG. 16 is a front view of a sixteenth embodiment thereof;

FIG. 17 is a front view of a seventeenth embodiment thereof; and,

FIG. 18 is a front view of an eighteenth embodiment thereof.

The broken lines in the figures show portions of the display screen or portion thereof with icon that form no part of the claimed design. The broken lines forming the outline of an eye shape are part of the claimed design.