For me, 3 aborted takeoffs (one at or beyond v1 in which we lost two engines on a 727 and went into the overrun at Reno in about 1985). The others were at low speed, both in Seoul. On one of these, the power had only just come up and we were going maybe 5mph.
I can remember only two aborted landings, one in San Jose (California) and one in Zurich.