| Lillis, Kansas | |
| Settlement Type: | Unincorporated community |
| Image Map1: | Map of Marshall Co, Ks, USA.png |
| Map Caption1: | KDOT map of Marshall County (legend) |
| Pushpin Map: | Kansas#USA |
| Pushpin Label: | Lillis |
| Pushpin Label Position: | left |
| Coordinates: | 39.6097°N -96.2961°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Kansas |
| Subdivision Type2: | County |
| Subdivision Name2: | Marshall |
| Subdivision Type3: | Township |
| Established Title: | Founded |
| Established Title1: | Platted |
| Named For: | T. F. Lillis |
| Unit Pref: | Imperial |
| Elevation Ft: | 1247 |
| Population Density Sq Mi: | auto |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP code |
| Area Code Type: | Area code |
| Area Code: | 785 |
| Blank Name: | FIPS code |
| Blank Info: | 20-40425 |
| Blank1 Name: | GNIS ID |
| Blank1 Info: | 473425 |
Lillis is an unincorporated community in Marshall County, Kansas, United States.
Lillis was named for Rev. T. F. Lillis.[1] A post office was opened in Lillis in 1910, and remained in operation until it was discontinued in 1958.[2]
The Lillis Gymnasium is on the National Register of Historic Places.
The community and nearby rural areas are served by Vermillion USD 380 public school district.