A driving support apparatus, comprising: an object detector (21, 22) configured to detect an object present in front of a vehicle; an executor (20, 40, 43, Step 460) configured to execute collision prevention control for avoiding collision with the detected object when a predetermined collision condition indicating that the vehicle is likely to collide with the detected object is satisfied ("Yes" in Step 430); and a prohibitor (20, 40, Step 440, Step 450, Step 480, Step 520, Step 570, and Step 530) configured to prohibit the executor from executing the collision prevention control when an operation amount of an accelerator operator of the vehicle is equal to or larger than a predetermined stop threshold value (APpcsth), wherein the prohibitor is configured to allow the executor to execute the collision prevention control (Step 450 and Step 960) even when the operation amount is equal to or larger than the predetermined stop threshold value within a specific period (time point t1 to time point t5) of from a start point ("Yes" in Step 720, Step 740, "Yes" in Step 815, and Step 825) to an end point ("Yes" in Step 930, and Step 960), the start point being a time point of determination that a predetermined erroneous operation condition relating to the operation amount is satisfied, the predetermined erroneous operation condition being satisfied when a driver of the vehicle is likely to erroneously operate the accelerator operator, the end point being a time point of determination that a predetermined consideration period (Tminashi) has elapsed since the predetermined erroneous operation condition has no longer been satisfied ("Yes" in Step 750 or "Yes" in Step 760, Step 780, "Yes" in Step 830, and Step 840). an object detector (21, 22) configured to detect an object present in front of a vehicle; an executor (20, 40, 43, Step 460) configured to execute collision prevention control for avoiding collision with the detected object when a predetermined collision condition indicating that the vehicle is likely to collide with the detected object is satisfied ("Yes" in Step 430); and a prohibitor (20, 40, Step 440, Step 450, Step 480, Step 520, Step 570, and Step 530) configured to prohibit the executor from executing the collision prevention control when an operation amount of an accelerator operator of the vehicle is equal to or larger than a predetermined stop threshold value (APpcsth), wherein the prohibitor is configured to allow the executor to execute the collision prevention control (Step 450 and Step 960) even when the operation amount is equal to or larger than the predetermined stop threshold value within a specific period (time point t1 to time point t5) of from a start point ("Yes" in Step 720, Step 740, "Yes" in Step 815, and Step 825) to an end point ("Yes" in Step 930, and Step 960), the start point being a time point of determination that a predetermined erroneous operation condition relating to the operation amount is satisfied, the predetermined erroneous operation condition being satisfied when a driver of the vehicle is likely to erroneously operate the accelerator operator, the end point being a time point of determination that a predetermined consideration period (Tminashi) has elapsed since the predetermined erroneous operation condition has no longer been satisfied ("Yes" in Step 750 or "Yes" in Step 760, Step 780, "Yes" in Step 830, and Step 840).