diff --git a/src/logo/ascii/mainsailos.txt b/src/logo/ascii/mainsailos.txt
new file mode 100644
index 000000000..3e65aa19b
--- /dev/null
+++ b/src/logo/ascii/mainsailos.txt
@@ -0,0 +1,18 @@
+                           -
+                          *%:
+                        :%%%#
+                       =%%%%%-
+                      *%%%%%%#
+                    :#%%%%%%%#.
+                   -%%%%%%%%+
+                  *%%%%%%%%-    :
+                .#%%%%%%%#.    *%=
+               -%%%%%%%%+    :#%%%*
+              +%%%%%%%%-    =%%%%%%#.
+            .#%%%%%%%#.    *%%%%%%%%:
+           -%%%%%%%%*    :#%%%%%%%#.
+          +%%%%%%%%-    =%%%%%%%%+    :%*.
+        .#%%%%%%%#:    *%%%%%%%%-    +%%%%*:
+       :%%%%%%%%*    :#%%%%%%%#.   .*%%%%%%%*
+      +%%%%%%%%=    -%%%%%%%%+    :%%%%%%%%*
+    .#%%%%%%%%:    *%%%%%%%%-    =%%%%%%%%=
diff --git a/src/logo/ascii/mainsailos_small.txt b/src/logo/ascii/mainsailos_small.txt
new file mode 100644
index 000000000..4117caa0a
--- /dev/null
+++ b/src/logo/ascii/mainsailos_small.txt
@@ -0,0 +1,7 @@
+          -:
+         +%*
+       .#%%+
+      -%%%: +=
+     +%%#..#%%-
+   .#%%+ -%%%- +=
+  -%%%- +%%#..#%%+
diff --git a/src/logo/builtin.c b/src/logo/builtin.c
index 582b898a0..8204c3cf3 100644
--- a/src/logo/builtin.c
+++ b/src/logo/builtin.c
@@ -2295,6 +2295,23 @@ static const FFlogo M[] = {
         .colorKeys = FF_COLOR_FG_YELLOW,
         .colorTitle = FF_COLOR_FG_GREEN,
     },
+    // MainsailOS
+    {
+        .names = {"MainsailOS"},
+        .lines = FASTFETCH_DATATEXT_LOGO_MAINSAILOS,
+        .colors = {
+            FF_COLOR_FG_RED,
+        },
+    },
+    // MainsailOSSmall
+    {
+        .names = {"MainsailOS_small"},
+        .type = FF_LOGO_LINE_TYPE_SMALL_BIT,
+        .lines = FASTFETCH_DATATEXT_LOGO_MAINSAILOS_SMALL,
+        .colors = {
+            FF_COLOR_FG_RED,
+        },
+    },
     // Mageia
     {
         .names = {"Mageia"},