diff --git a/bin/chflags/chflags.1 b/bin/chflags/chflags.1
--- a/bin/chflags/chflags.1
+++ b/bin/chflags/chflags.1
@@ -208,7 +208,7 @@
 In addition, these options override each other and the
 command's actions are determined by the last one specified.
 .Pp
-You can use "ls -lo" to see the flags of existing files.
+You can use "ls -lO" to see the flags of existing files.
 .Pp
 Note that the ability to change certain flags is dependent
 on the current kernel
diff --git a/bin/ls/ls.h b/bin/ls/ls.h
--- a/bin/ls/ls.h
+++ b/bin/ls/ls.h
@@ -54,8 +54,10 @@
 extern int f_samesort;		/* sort time and name in same direction */
 extern int f_sectime;		/* print the real time for all files */
 extern int f_size;		/* list size in short listing */
+extern int f_sgroup;		/* disable showing the name of owning group */
 extern int f_slash;		/* append a '/' if the file is a directory */
 extern int f_sortacross;	/* sort across rows, not down columns */
+extern int f_sowner;		/* disable showing the owner's name */
 extern int f_statustime;	/* use time of last mode change */
 extern int f_thousands;		/* show file sizes with thousands separators */
 extern char *f_timeformat;	/* user-specified time format */
diff --git a/bin/ls/ls.1 b/bin/ls/ls.1
--- a/bin/ls/ls.1
+++ b/bin/ls/ls.1
@@ -162,6 +162,13 @@
 This option cancels the
 .Fl P
 option.
+.It Fl O
+Include the file flags in a long
+.Pq Fl l
+output.
+See
+.Xr chflags 1
+for a list of file flags and their meanings.
 .It Fl P
 If argument is a symbolic link, list the link itself rather than the
 object the link references.
@@ -301,14 +308,9 @@
 .Fl s
 options.
 .It Fl g
-This option has no effect.
-It is only available for compatibility with
-.Bx 4.3 ,
-where it was used to display the group name in the long
+Display the long
 .Pq Fl l
-format output.
-This option is incompatible with
-.St -p1003.1-2008 .
+format output without the file owner's name or number.
 .It Fl h
 When used with the
 .Fl l
@@ -339,14 +341,15 @@
 .Pq Fl l
 output.
 .It Fl o
-Include the file flags in a long
+Display the long
 .Pq Fl l
-output.
-This option is incompatible with
-.St -p1003.1-2008 .
-See
-.Xr chflags 1
-for a list of file flags and their meanings.
+format output without the file's group name or number.
+This behavior changed in
+.Fx 14 ,
+to conform to
+.St -p1003.1-2008 ;
+for the previous behavior of displaying file flags, use
+.Pq Fl O .
 .It Fl p
 Write a slash
 .Pq Ql /
@@ -872,7 +875,7 @@
 .Xr chflags 1 ) ,
 and suffix each filename with a symbol representing its file type:
 .Pp
-.Dl $ ls -lioF
+.Dl $ ls -liOF
 .Pp
 List the files in
 .Pa /var/log ,
diff --git a/bin/ls/ls.c b/bin/ls/ls.c
--- a/bin/ls/ls.c
+++ b/bin/ls/ls.c
@@ -142,8 +142,10 @@
 static int f_singlecol;		/* use single column output */
        int f_size;		/* list size in short listing */
 static int f_sizesort;
+       int f_sgroup;		/* disable showing the name of owning group */
        int f_slash;		/* similar to f_type, but only for dirs */
        int f_sortacross;	/* sort across rows, not down columns */
+       int f_sowner;		/* disable showing owner's name */
        int f_statustime;	/* use time of last mode change */
 static int f_stream;		/* stream the output, separate with commas */
        int f_thousands;		/* show file sizes with thousands separators */
@@ -276,7 +278,7 @@
 		colorflag = COLORFLAG_AUTO;
 #endif
 	while ((ch = getopt_long(argc, argv,
-	    "+1ABCD:FGHILPRSTUWXZabcdfghiklmnopqrstuvwxy,", long_opts,
+	    "+1ABCD:FGHILOPRSTUWXZabcdfghiklmnopqrstuvwxy,", long_opts,
 	    NULL)) != -1) {
 		switch (ch) {
 		/*
@@ -374,6 +376,9 @@
 			fts_options |= FTS_LOGICAL;
 			f_nofollow = 0;
 			break;
+		case 'O':
+			f_flags = 1;
+			break;
 		case 'P':
 			fts_options &= ~FTS_COMFOLLOW;
 			fts_options &= ~FTS_LOGICAL;
@@ -402,7 +407,11 @@
 			f_listdir = 1;
 			f_recursive = 0;
 			break;
-		case 'g':	/* Compatibility with 4.3BSD. */
+		case 'g':
+			f_longform = 1;
+			f_singlecol = 0;
+			f_stream = 0;
+			f_sowner = 1;
 			break;
 		case 'h':
 			f_humanval = 1;
@@ -421,9 +430,15 @@
 			break;
 		case 'n':
 			f_numericonly = 1;
+			f_longform = 1;
+			f_singlecol = 0;
+			f_stream = 0;
 			break;
 		case 'o':
-			f_flags = 1;
+			f_longform = 1;
+			f_singlecol = 0;
+			f_stream = 0;
+			f_sgroup = 0;
 			break;
 		case 'p':
 			f_slash = 1;
diff --git a/bin/ls/print.c b/bin/ls/print.c
--- a/bin/ls/print.c
+++ b/bin/ls/print.c
@@ -234,9 +234,12 @@
 		strmode(sp->st_mode, buf);
 		aclmode(buf, p);
 		np = p->fts_pointer;
-		(void)printf("%s %*ju %-*s  %-*s  ", buf, dp->s_nlink,
-		    (uintmax_t)sp->st_nlink, dp->s_user, np->user, dp->s_group,
-		    np->group);
+		(void)printf("%s %*ju ", buf, dp->s_nlink,
+		    (uintmax_t)sp->st_nlink);
+		if (!f_sowner)
+			(void)printf("%-*s ", dp->s_user, np->user);
+		if (!f_sgroup)
+			(void)printf("%-*s ", dp->s_group, np->group);
 		if (f_flags)
 			(void)printf("%-*s ", dp->s_flags, np->flags);
 		if (f_label)
diff --git a/bin/ls/tests/ls_tests.sh b/bin/ls/tests/ls_tests.sh
--- a/bin/ls/tests/ls_tests.sh
+++ b/bin/ls/tests/ls_tests.sh
@@ -696,7 +696,7 @@
 atf_test_case o_flag
 o_flag_head()
 {
-	atf_set "descr" "Verify that the output from ls -o prints out the chflag values or '-' if none are set"
+	atf_set "descr" "Verify that the output from ls -O prints out the chflag values or '-' if none are set"
 }
 
 o_flag_body()
@@ -713,9 +713,9 @@
 	atf_check -e empty -o empty -s exit:0 chflags 0 b.file
 
 	atf_check -e empty -o match:"[[:space:]]+uarch[[:space:]]$size+.+a\\.file" \
-	    -s exit:0 ls -lo a.file
+	    -s exit:0 ls -lO a.file
 	atf_check -e empty -o match:"[[:space:]]+\\-[[:space:]]$size+.+b\\.file" \
-	    -s exit:0 ls -lo b.file
+	    -s exit:0 ls -lO b.file
 }
 
 atf_test_case p_flag
diff --git a/bin/ls/util.c b/bin/ls/util.c
--- a/bin/ls/util.c
+++ b/bin/ls/util.c
@@ -227,9 +227,9 @@
 {
 	(void)fprintf(stderr,
 #ifdef COLORLS
-	"usage: ls [-ABCFGHILPRSTUWZabcdfghiklmnopqrstuvwxy1,] [--color=when] [-D format]"
+	"usage: ls [-ABCFGHILOPRSTUWZabcdfghiklmnopqrstuvwxy1,] [--color=when] [-D format]"
 #else
-	"usage: ls [-ABCFHILPRSTUWZabcdfghiklmnopqrstuvwxy1,] [-D format]"
+	"usage: ls [-ABCFHILOPRSTUWZabcdfghiklmnopqrstuvwxy1,] [-D format]"
 #endif
 		      " [file ...]\n");
 	exit(1);
diff --git a/share/skel/dot.shrc b/share/skel/dot.shrc
--- a/share/skel/dot.shrc
+++ b/share/skel/dot.shrc
@@ -22,7 +22,7 @@
 alias h='fc -l'
 alias j=jobs
 alias m="$PAGER"
-alias ll='ls -laFo'
+alias ll='ls -laFO'
 alias l='ls -l'
 alias g='egrep -i'
  
diff --git a/sys/contrib/openzfs/tests/zfs-tests/tests/functional/acl/off/dosmode.ksh b/sys/contrib/openzfs/tests/zfs-tests/tests/functional/acl/off/dosmode.ksh
--- a/sys/contrib/openzfs/tests/zfs-tests/tests/functional/acl/off/dosmode.ksh
+++ b/sys/contrib/openzfs/tests/zfs-tests/tests/functional/acl/off/dosmode.ksh
@@ -57,7 +57,7 @@
 	if is_linux; then
 		read_dos_attributes $path
 	else
-		ls -lo $path | awk '{ print $5 }'
+		ls -lO $path | awk '{ print $5 }'
 	fi | grep -qwF $flag
 }
 
diff --git a/tools/test/stress2/misc/fts2.sh b/tools/test/stress2/misc/fts2.sh
--- a/tools/test/stress2/misc/fts2.sh
+++ b/tools/test/stress2/misc/fts2.sh
@@ -208,7 +208,7 @@
 			    p->fts_info == FTS_NS)    /* stat(2) failed       */
 				continue;
 			fprintf(stderr, "FAULT\n");
-			sprintf(help, "ls -lo %s", p->fts_path);
+			sprintf(help, "ls -lO %s", p->fts_path);
 			system(help);
 			fprintf(stderr, "fts_path: %s\n", p->fts_path);
 			fprintf(stderr, "fts_info: %d %s\n", p->fts_info,