Exhibit 11.1

ALDILA, INC. AND SUBSIDIARIES        COMPUTATION OF NET INCOME PER COMMON SHARE        (In thousands, except per share amounts)

|                                                                                                                                                                                                                                 |  |   |         | Twelve months ended
December 31, |  
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | - | ------- | -------------------------------- | -
|
|BASIC:                                                                                                                                                                                                                           |  |   |         |                                  |  
|Net income (loss)                                                                                                                                                                                                                |  | $ | (51,419 | )                                | $
|Weighted average number of common shares outstanding                                                                                                                                                                             |  |   | 15,269  |                                  |  
|                                                                                                                                                                                                                                 |  |   |         |                                  |  
|Net income (loss) per common share                                                                                                                                                                                               |  | $ | (3.37   | )                                | $
|                                                                                                                                                                                                                                 |  |   |         |                                  |  
|ASSUMING DILUTION:                                                                                                                                                                                                               |  |   |         |                                  |  
|Net income (loss)                                                                                                                                                                                                                |  | $ | (51,419 | )                                | $
|Weighted average number of common shares outstanding                                                                                                                                                                             |  |   | 15,269  |                                  |  
|The number of shares resulting from the assumed exercise of stock options reduced by the number of shares which could have been purchased with the proceeds from such exercise, using the average market price during the
period |  |   |        |                                  |  
|                                                                                                                                                                                                                                 |  |   |         |                                  |  
|Weighted average number of common and common equivalent shares                                                                                                                                                                   |  |   | 15,269  |                                  |  
|                                                                                                                                                                                                                                 |  |   |         |                                  |  
|Net income (loss) per common share, assuming dilution                                                                                                                                                                            |  | $ | (3.37   | )                                | $
|                                                                                                                                                                                                                                 |  |   |         |                                  |  

---

QuickLinks