Juggler of Worlds

{{short description|2008 science fiction novel by Niven & Lerner}}

{{more citations needed|date=March 2021}}

{{Use mdy dates|date=March 2025}}

{{Infobox book

| name = Juggler of Worlds

| title_orig =

| translator =

| image = File:JugglerOfWorlds.jpg

| caption = First edition

| author = Larry Niven and Edward M. Lerner

| illustrator =

| cover_artist = Stephan Martinière

| country = United States

| language = English

| series = Known Space

| subject =

| genre = Science fiction

| publisher = Tor Books

| pub_date = September 16, 2008

| english_pub_date =

| media_type = Hardcover

| pages = 352

| isbn = 0765318261

| dewey = 813/.54 22

| congress = PS3564.I9 J84 2008

| oclc = 185033391

| preceded_by = Fleet of Worlds

| followed_by = Destroyer of Worlds

}}

Juggler of Worlds (2008) is a science fiction novel by American writers Larry Niven and Edward M. Lerner, a sequel to their Fleet of Worlds.{{cite news|first=Geoff |last=Willmetts |title=Juggler Of Worlds by Larry Niven and Edward M. Lerner |url=http://www.sfcrowsnest.com/articles/books/2008/nz13365.php |work=SF Crowsnest |date=2008-01-12 |access-date=8 July 2009 |url-status=dead |archive-url=https://web.archive.org/web/20081227153859/http://www.sfcrowsnest.com/articles/books/2008/nz13365.php |archive-date=December 27, 2008 }}{{cite news |title=Larry Niven is 'Juggler of Worlds' |url=http://nl.newsbank.com/nl-search/we/Archives?p_product=FMTB&p_theme=fmtb&p_action=search&p_maxdocs=200&p_topdoc=1&p_text_direct-0=1248CC4D3A3A3830&p_field_direct-0=document_id&p_perpage=10&p_sort=YMD_date:D&s_trackval=GooglePM |work=Fort Morgan Times |date=2008-10-18 |access-date=8 July 2009}}

It is set in the Known Space universe. Most of the book revisits earlier stories (the Beowulf Shaeffer stories in Crashlander and Neutron Star from the points of view of Sigmund Ausfaller and several Pierson's Puppeteers; "The Soft Weapon", another story in Neutron Star; and parts of the previous novel in the series, Fleet of Worlds, from the point of view of Nessus). The novel also severely revises the established knowledge of the Outsider race. The final quarter of the book returns to the setting of and is a sequel to Fleet of Worlds.