Trostan

File:Trostan viewed from SW.jpg

{{Short description|Mountain in Northern Ireland}}

{{Use dmy dates|date=April 2022}}

{{Infobox mountain

| name = Trostan

| other_name = Trostán

| photo = Trig point at summit of Trostan - geograph.org.uk - 642884.jpg

| photo_caption = On the summit of Trostan

| elevation_m = 551

| elevation_ref = {{cite web|url=https://mountainviews.ie/summit/361/|title=Trostan|publisher=MountainViews|accessdate=2 June 2019}}

| prominence_m = 515

| prominence_ref =

| listing = County Top (Antrim), Marilyn

| location = County Antrim, Northern Ireland

| range = Antrim Hills

| coordinates ={{coord|55|03|N|6|10|W|display=inline,title|region:GB_type:mountain_source:GNS-enwiki}}

| topo = OSi Discovery 9

| translation = pole/staff

| language = Irish

| type = Olivine basalt lava

| age =

| last_eruption =

| first_ascent =

| easiest_route =

| map = Northern Ireland#Island of Ireland#United Kingdom

| map_relief = yes

| map_caption =Location in Ireland

}}

Trostan ({{langx|ga|Trostán}}, meaning 'pole/staff') is a mountain in County Antrim, Northern Ireland and at 551 metres (1,808 feet) is the highest point in the county.