编辑“︁SF9”︁（章节）

=== 2018年 ===
==== 迷你四輯《MAMMA MIA!》 ====
2月26日，SF9以主打歌《[[MAMMA MIA!]]》回歸舞台，並推出迷你專輯《MAMMA MIA!》<ref>{{cite web|url= https://music.apple.com/tw/album/mamma-mia-ep/1353226874|title= SF9《MAMMA MIA!》|work= [[Apple Music]]|accessdate= 2020-01-20|archive-date= 2020-04-25|archive-url= https://web.archive.org/web/20200425215934/https://music.apple.com/tw/album/mamma-mia-ep/1353226874|dead-url= no}}</ref>。當週在Gaon專輯週榜獲得第三位<ref>{{cite web|url= http://www.gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=09&hitYear=2018&termGbn=week|title= Gaon專輯榜 (2018.02.25-2018.03.03)|work= [[Gaon音樂榜|Gaon]]|accessdate= 2020-01-20|archive-date= 2020-04-25|archive-url= https://web.archive.org/web/20200425215940/http://www.gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=09&hitYear=2018&termGbn=week|dead-url= no}}</ref>，在2018年2月及3月分別登上Gaon專輯月榜第十六位<ref>{{cite web|url= http://www.gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=02&hitYear=2018&termGbn=month|title= Gaon 2018年2月專輯月榜|work= [[Gaon音樂榜|Gaon]]|accessdate= 2020-01-20|archive-date= 2020-02-04|archive-url= https://web.archive.org/web/20200204010314/http://gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=02&hitYear=2018&termGbn=month|dead-url= no}}</ref>及第十一位，共售出36,642張<ref>{{cite web|url= http://www.gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=03&hitYear=2018&termGbn=month|title= Gaon 2018年3月專輯月榜|work= [[Gaon音樂榜|Gaon]]|accessdate= 2020-01-20|archive-date= 2020-01-30|archive-url= https://web.archive.org/web/20200130205922/http://gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=03&hitYear=2018&termGbn=month|dead-url= no}}</ref>；在告示牌世界專輯榜則獲得第十位<ref name="billboardWLP"/>。

為宣傳該迷你專輯，SF9在日本舉行《Zepp Tour 2018 "MAMMA MIA!"》<ref>{{cite web|url= http://sf9-official.jp/free/news/details.php?id=288/|title= 「SF9 Zepp Tour 2018 “MAMMA MIA!”」公演|work= SF9日本官方網站|language= ja|accessdate= 2020-09-26|archive-date= 2020-06-11|archive-url= https://web.archive.org/web/20200611004204/https://sf9-official.jp/free/news/details.php?id=288%2F|dead-url= no}}</ref>，分別在5/29於大阪Zepp Namba、5/30於愛知Zepp Nagoya、6/01於東京Zepp Diver City公演。

==== 迷你五輯《SENSUOUS》 ====
7月31日，SF9攜迷你專輯《[[Sensuous|SENSUOUS]]》回歸，並收錄主打歌《Now or Never(질렀어)》<ref>{{cite web|url= https://music.apple.com/tw/album/sensuous-ep/1458326337|title= SF9《SENSUOUS》|work= [[Apple Music]]|accessdate= 2020-01-20|archive-date= 2020-04-25|archive-url= https://web.archive.org/web/20200425215950/https://music.apple.com/tw/album/sensuous-ep/1458326337|dead-url= no}}</ref>。當週在Gaon專輯榜獲得第三位<ref>{{cite web|url= http://www.gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=31&hitYear=2018&termGbn=week|title= Gaon專輯榜 (2018.07.29-2018.08.04)|work= [[Gaon音樂榜|Gaon]]|accessdate= 2020-01-20|archive-date= 2020-01-15|archive-url= https://web.archive.org/web/20200115125441/http://gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T|dead-url= no}}</ref>，並分別在2018年7月及8月登上Gaon專輯月榜第十八位<ref>{{cite web|url= http://www.gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=07&hitYear=2018&termGbn=month|title= Gaon 2018年7月專輯月榜|work= [[Gaon音樂榜|Gaon]]|accessdate= 2020-01-20|archive-date= 2018-09-19|archive-url= https://web.archive.org/web/20180919220114/http://www.gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=07&hitYear=2018&termGbn=month|dead-url= no}}</ref>和第十六位，共售出32,507張<ref>{{cite web|url= http://www.gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=08&hitYear=2018&termGbn=month|title= Gaon 2018年8月專輯月榜|work= [[Gaon音樂榜|Gaon]]|accessdate= 2020-01-20|archive-date= 2019-07-25|archive-url= https://web.archive.org/web/20190725065255/http://www.gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=08&hitYear=2018&termGbn=month|dead-url= no}}</ref>；在告示牌世界專輯榜亦獲得第十位<ref name="billboardWLP"/>。

8月，SF9前往舉行南美粉絲見面會，分別於8/23在[[墨西哥]]及8/25~26在[[巴西]]與粉絲見面<ref>{{cite web|url= https://fncent.com/b/notice/32334/|title= 2018 SF9 LATIN AMERICA FAN MEETING TOUR|work= [[FNC娛樂]]|accessdate= 2020-01-20|archive-date= 2020-04-25|archive-url= https://web.archive.org/web/20200425220002/https://fncent.com/b/notice/32334/|dead-url= no}}</ref>。9月22日，SF9在[[臺灣]]Legacy Max舉辦粉絲見面會<ref>{{cite web|url= https://fncent.com/?m=bbs&bid=notice&p=2&where=site%3D1+and+notice%3D0+and+bbsid%3D%27notice%27++and+ex1%3D%271%27+&uid=33305/|title= 2018 SF9 FAN MEETING IN TAIPEI|work= [[FNC娛樂]]|accessdate= 2020-09-26|archive-date= 2020-05-30|archive-url= https://web.archive.org/web/20200530124603/https://fncent.com/?m=bbs&bid=notice&p=2&where=site%3D1+and+notice%3D0+and+bbsid%3D%27notice%27++and+ex1%3D%271%27+&uid=33305%2F|dead-url= no}}</ref>。10月27日，SF9於首爾YES24 LIVE HALL舉行首場韓國演唱會《DREAMER》<ref>{{cite web|url= https://www.hellokpop.com/event/sf9-first-solo-concert/|title= SF9首場韓國演唱會|date= {{start_date|2018|10|29}}|first= 丹娜|last= 愛麗莎|accessdate= 2020-01-20|archive-date= 2020-04-25|archive-url= https://web.archive.org/web/20200425220011/https://www.hellokpop.com/event/sf9-first-solo-concert/|dead-url= no}}</ref>。