diff --git a/crates/moon-ui-components/src/moon/data_table.rs b/crates/moon-ui-components/src/moon/data_table.rs
index 998d55d..4c7d073 100644
--- a/crates/moon-ui-components/src/moon/data_table.rs
+++ b/crates/moon-ui-components/src/moon/data_table.rs
@@ -89,6 +89,9 @@ pub enum MoonDataTableWidthPolicy {
 pub struct MoonDataTableColumn {
     pub key: SharedString,
     pub title: SharedString,
+    /// Hover text for the header cell, e.g. the raw schema name behind a translated title.
+    /// `None` renders the bare title as before.
+    pub tooltip: Option<SharedString>,
     /// Base column width in logical design pixels.
     ///
     /// `MoonDataTable` treats this value as both the minimum width and the proportional weight for
@@ -136,6 +139,7 @@ impl MoonDataTableColumn {
         Self {
             key: key.into(),
             title: title.into(),
+            tooltip: None,
             width,
             fill: false,
             no_grow: false,
@@ -167,6 +171,12 @@ impl MoonDataTableColumn {
         self
     }
 
+    /// Attach a hover tooltip to the header cell.
+    pub fn tooltip(mut self, tooltip: impl Into<SharedString>) -> Self {
+        self.tooltip = Some(tooltip.into());
+        self
+    }
+
     pub fn sortable(mut self, sortable: bool) -> Self {
         self.sortable = sortable;
         self
diff --git a/crates/moon-ui-components/src/moon/data_table/header.rs b/crates/moon-ui-components/src/moon/data_table/header.rs
index 5c648a2..9d0742d 100644
--- a/crates/moon-ui-components/src/moon/data_table/header.rs
+++ b/crates/moon-ui-components/src/moon/data_table/header.rs
@@ -9,6 +9,7 @@ use super::super::{
     table::{MoonTableAlign, MoonTableStyle},
     theme::MoonTheme,
     tokens::{MoonPalette, rgba_from},
+    tooltip::MoonTooltipView,
 };
 use super::drag::{MoonDataColumnDrag, MoonDataColumnResizeDrag};
 use super::{
@@ -123,7 +124,12 @@ pub(super) fn render_header(
                 },
                 1.0,
             ))
-            .child(label);
+            .child(label)
+            .when_some(column.tooltip.clone(), |cell, tooltip| {
+                cell.tooltip(move |_window, cx| {
+                    cx.new(|_| MoonTooltipView::new(tooltip.clone())).into()
+                })
+            });
 
         cell = cell.child(
             canvas(
diff --git a/crates/moon-ui-components/src/moon/theme.rs b/crates/moon-ui-components/src/moon/theme.rs
index 9cac6b9..160c7f2 100644
--- a/crates/moon-ui-components/src/moon/theme.rs
+++ b/crates/moon-ui-components/src/moon/theme.rs
@@ -251,7 +251,7 @@ impl MoonThemeTokens {
             table_head_foreground: rgba_from(p.text_soft, 1.0),
             table_foot: rgba_from(p.head_row, 1.0),
             table_foot_foreground: rgba_from(p.text_soft, 1.0),
-            table_hover: rgba_from(p.panel_high, 1.0),
+            table_hover: rgba_from(p.table_hover, 1.0),
             table_row_border: rgba_from(p.row_line, 1.0),
             title_bar: rgba_from(p.chrome, 1.0),
             title_bar_border: rgba_from(p.border, 1.0),
diff --git a/crates/moon-ui-components/src/moon/tokens.rs b/crates/moon-ui-components/src/moon/tokens.rs
index e5aca9d..66fdc28 100644
--- a/crates/moon-ui-components/src/moon/tokens.rs
+++ b/crates/moon-ui-components/src/moon/tokens.rs
@@ -50,6 +50,9 @@ pub struct MoonPalette {
     pub table_head: u32,
     pub table_body: u32,
     pub table_selected: u32,
+    /// Row hover fill for data tables: one step off the row surface in EITHER theme, so a
+    /// hovered row is visible on a white light-theme table (where `panel_high` is itself white).
+    pub table_hover: u32,
     pub green: u32,
     pub green_btn: u32,
     pub green_text: u32,
@@ -132,6 +135,7 @@ impl MoonPalette {
         table_head: 0x20232A,
         table_body: 0x1A1C1F,
         table_selected: 0xFFB347,
+        table_hover: 0x22252B,
         green: 0x1E8C5B,
         green_btn: 0x1E8C5B,
         green_text: 0x1E8C5B,
@@ -178,6 +182,7 @@ impl MoonPalette {
         table_head: 0xF3F6F8,
         table_body: 0xFFFFFF,
         table_selected: 0x009DFF,
+        table_hover: 0xEEF2F6,
         green: 0x178A57,
         green_btn: 0x178A57,
         green_text: 0x0E6E45,
diff --git a/crates/moon-ui-components/themes/moon-light.toml b/crates/moon-ui-components/themes/moon-light.toml
index e3defa3..e0ae9d4 100644
--- a/crates/moon-ui-components/themes/moon-light.toml
+++ b/crates/moon-ui-components/themes/moon-light.toml
@@ -31,6 +31,7 @@ text_faint = 0x7D7669
 table_head = 0x20232A
 table_body = 0x1A1C1F
 table_selected = 0xFFB347
+table_hover = 0x22252B
 green = 0x1E8C5B
 green_btn = 0x1E8C5B
 green_text = 0x1E8C5B
@@ -99,6 +100,7 @@ text_faint = 0x98A3AE
 table_head = 0xF3F6F8
 table_body = 0xFFFFFF
 table_selected = 0x009DFF
+table_hover = 0xEEF2F6
 green = 0x178A57
 green_btn = 0x178A57
 green_text = 0x0E6E45
diff --git a/crates/moon-ui-components/themes/moon-terminal.toml b/crates/moon-ui-components/themes/moon-terminal.toml
index 2ff118e..daf7830 100644
--- a/crates/moon-ui-components/themes/moon-terminal.toml
+++ b/crates/moon-ui-components/themes/moon-terminal.toml
@@ -31,6 +31,7 @@ text_faint = 0x7D7669
 table_head = 0x20232A
 table_body = 0x1A1C1F
 table_selected = 0xFFB347
+table_hover = 0x22252B
 green = 0x1E8C5B
 green_btn = 0x1E8C5B
 green_text = 0x1E8C5B
@@ -99,6 +100,7 @@ text_faint = 0x98A3AE
 table_head = 0xF3F6F8
 table_body = 0xFFFFFF
 table_selected = 0x009DFF
+table_hover = 0xEEF2F6
 green = 0x178A57
 green_btn = 0x178A57
 green_text = 0x0E6E45
diff --git a/docs/component-api-baseline.json b/docs/component-api-baseline.json
index 0952891..dd5a0fc 100644
--- a/docs/component-api-baseline.json
+++ b/docs/component-api-baseline.json
@@ -949,6 +949,10 @@
       "file": "crates/moon-ui-components/src/moon/data_table.rs",
       "signature": "pub fn tone(mut self, tone: MoonTone) -> Self"
     },
+    {
+      "file": "crates/moon-ui-components/src/moon/data_table.rs",
+      "signature": "pub fn tooltip(mut self, tooltip: impl Into<SharedString>) -> Self"
+    },
     {
       "file": "crates/moon-ui-components/src/moon/data_table.rs",
       "signature": "pub fn track_scroll(mut self, handle: &MoonVirtualListScrollHandle) -> Self"