A trailer hitch guide adaptor for a trailer tongue coupler, comprising: - a mounting plate configured for attachment to the trailer tongue coupler, the mounting plate having an mounting plate upper-surface and a mounting plate front-end; - a pair of guide plates, each of the guide plates attached below the mounting plate, each of the guide plates having a guide plate front-end and a guide plate back-end, wherein said guide plates are angled relative to each other, whereby each of the guide plate back-ends converge towards each other and towards an intersection line, and wherein the guide plate back-ends are connected to each other at or around the intersection line to form a single-piece guiding-structure; and - a third guide plate extending outwards from the mounting plate front-end, the third guide plate having a third guide plate upper surface, wherein the third guide plate upper surface defines an obtuse angle relative to the mounting plate upper surface, such that a hitch ball is able to be guided towards the mounting plate front-end via the third guide plate, and/or from below the mounting plate and towards the guide plate back ends via one of the guide plates attached below the mounting plate; and characterised by the third guide plate having a third guide plate front-end with a curved path and by a reinforcement plate attached to the third guide plate upper surface, the reinforcement plate having a reinforcement plate lower surface and a reinforcement plate front-end being attached to the third guide plate upper surface, such that the reinforcement lower plate surface is parallel to the mounting plate upper surface, wherein the mounting plate and the reinforcement plate are mechanically coupled to each other, thereby reinforcing the attachment of the third guide plate to the mounting plate. - a mounting plate configured for attachment to the trailer tongue coupler, the mounting plate having an mounting plate upper-surface and a mounting plate front-end; - a pair of guide plates, each of the guide plates attached below the mounting plate, each of the guide plates having a guide plate front-end and a guide plate back-end, wherein said guide plates are angled relative to each other, whereby each of the guide plate back-ends converge towards each other and towards an intersection line, and wherein the guide plate back-ends are connected to each other at or around the intersection line to form a single-piece guiding-structure; and - a third guide plate extending outwards from the mounting plate front-end, the third guide plate having a third guide plate upper surface, wherein the third guide plate upper surface defines an obtuse angle relative to the mounting plate upper surface, such that a hitch ball is able to be guided towards the mounting plate front-end via the third guide plate, and/or from below the mounting plate and towards the guide plate back ends via one of the guide plates attached below the mounting plate; and characterised by the third guide plate having a third guide plate front-end with a curved path and by a reinforcement plate attached to the third guide plate upper surface, the reinforcement plate having a reinforcement plate lower surface and a reinforcement plate front-end being attached to the third guide plate upper surface, such that the reinforcement lower plate surface is parallel to the mounting plate upper surface, wherein the mounting plate and the reinforcement plate are mechanically coupled to each other, thereby reinforcing the attachment of the third guide plate to the mounting plate. such that a hitch ball is able to be guided towards the mounting plate front-end via the third guide plate, and/or from below the mounting plate and towards the guide plate back ends via one of the guide plates attached below the mounting plate; and characterised by the third guide plate having a third guide plate front-end with a curved path and by a reinforcement plate attached to the third guide plate upper surface, the reinforcement plate having a reinforcement plate lower surface and a reinforcement plate front-end being attached to the third guide plate upper surface, such that the reinforcement lower plate surface is parallel to the mounting plate upper surface, wherein the mounting plate and the reinforcement plate are mechanically coupled to each other, thereby reinforcing the attachment of the third guide plate to the mounting plate.