:Owen John

{{short description|Welsh author}}

{{Orphan|date=August 2018}}

{{for|the Welsh children books author |John Owen (author)}}

{{Infobox person

| name = Owen John

| image =

| alt =

| caption =

| birth_name = Leonard Owen-John

| birth_date = {{Birth date|1918|5|1|df=y}}

| birth_place = Wales

| death_date = {{Death date and age|1995|1|23|1918|5|1|df=y}}

| death_place = Swansea, Wales

| nationality = British

| other_names = John Bourne

| occupation = Writer

| years_active = 1966-1979

| known_for = Haggai Godin series

| website =

| notable_works =

}}

Leonard Owen-John (1 May 1918 – 23 January 1995){{cite web|title=Leonard Owen John|url=https://billiongraves.com/grave/Leonard-Owen-John/8515686#|accessdate=26 Jan 2016}} was a Welsh author of spy fiction who is mostly remembered for his series of novels starring the Russian-born MI-6 agent Haggai Godin.

Praised by his comparatively realistic approach to the world of espionage, he has been called by critics "a master of the double cross".{{cite magazine|author1-link = New Library World | journal = The Library World | volume = 68 | issue = 9 | pages = 262 | publisher = W.H. Smith & Son Ltd. | location = London | date = March 1967 | title=John (Owen) The Disinformer | doi = 10.1108/eb009517 }}