List of stars in Hydrus
This is the list of notable stars in the constellation Hydrus, sorted by decreasing brightness.
| Name | B | Var | HD | HIP | RA | Dec | vis. mag. | abs. mag. | Dist. | Sp. class | Notes |
| β Hyi | β | 2151 | 2021 | 2.79 | 3.45 | 24 | G2IV | suspected variable, | |||
| α Hyi | α | 12311 | 9236 | 2.86 | 1.16 | 71 | F0V | Head of Hydrus | |||
| γ Hyi | γ | 24512 | 17678 | 3.26 | −0.83 | 214 | M2III | Foo Pih; semiregular variable | |||
| δ Hyi | δ | 15008 | 11001 | 4.08 | 0.99 | 135 | A3V | ||||
| ε Hyi | ε | 16978 | 12394 | 4.12 | 0.76 | 153 | B9III | ||||
| η2 Hyi | η2 | 11977 | 8928 | 4.68 | 0.57 | 217 | G5III | has a planet | |||
| ν Hyi | ν | 18293 | 13244 | 4.76 | −0.26 | 329 | K3III | ||||
| ζ Hyi | ζ | 17566 | 12876 | 4.83 | 0.05 | 295 | A2IV/V | ||||
| λ Hyi | λ | 4815 | 3781 | 5.09 | 1.10 | 205 | K5III | ||||
| μ Hyi | μ | 16522 | 11757 | 5.27 | 0.51 | 292 | G4III | ||||
| θ Hyi | θ | 19400 | 14131 | 5.51 | −0.52 | 525 | B8III/IV | ||||
| ι Hyi | ι | 21024 | 15201 | 5.51 | 3.17 | 96 | F4IV-V | ||||
| π1 Hyi | π1 | 14141 | 10418 | 5.57 | −1.21 | 739 | M1III | suspected variable, | |||
| π2 Hyi | π2 | 14287 | 10513 | 5.67 | −0.11 | 468 | K2III | ||||
| BN Hyi | BN | 20313 | 14521 | 5.70 | 1.26 | 248 | F2II-III | δ Sct variable, | |||
| HD 10615 | 10615 | 7921 | 5.70 | 0.42 | 371 | K2/K3III | |||||
| HD 8810 | 8810 | 6631 | 5.92 | −1.53 | 1009 | M0III | |||||
| HD 1801 | 1801 | 1706 | 5.96 | −0.69 | 697 | K3III | |||||
| HD 21722 | 21722 | 15968 | 5.96 | 2.99 | 128 | F3V | |||||
| κ Hyi | κ | 15248 | 11095 | 5.99 | 1.05 | 318 | K0III | suspected variable | |||
| HD 9896 | 9896 | 7387 | 6.03 | 3.00 | 132 | F2V | |||||
| τ2 Hyi | τ2 | 11604 | 8366 | 6.05 | 2.09 | 202 | F0III | ||||
| HD 11995 | 11995 | 8983 | 6.07 | 2.73 | 152 | F0IV/V | |||||
| HD 12477 | 12477 | 9318 | 6.09 | 0.50 | 428 | K2III | |||||
| HD 10042 | 10042 | 7271 | 6.11 | 0.46 | 441 | G3IV | |||||
| HD 19940 | 19940 | 14547 | 6.12 | 1.30 | 300 | K1III | |||||
| HD 21563 | 21563 | 15840 | 6.14 | −0.17 | 595 | A4:V+... | |||||
| σ Hyi | σ | 12363 | 8991 | 6.15 | 3.07 | 135 | F5/F6IV/V | ||||
| HD 10052 | 10052 | 7506 | 6.18 | −0.78 | 805 | M3III | semiregular variable, | ||||
| CT Hyi | CT | 24188 | 17543 | 6.26 | 0.50 | 463 | B8V | α2 CVn variable | |||
| τ1 Hyi | τ1 | 10859 | 7879 | 6.33 | 0.91 | 395 | G6/G8III | ||||
| HD 12270 | 12270 | 9149 | 6.36 | 0.28 | 535 | G8II/III | |||||
| HD 11944 | 11944 | 8957 | 6.43 | 2.73 | 179 | F2V | |||||
| HD 1221 | 1221 | 1268 | 6.49 | −0.18 | 704 | G8/K0III | |||||
| GJ 3021 | 1237 | 1292 | 6.59 | 5.36 | 57 | G8.5Vk | has a planet | ||||
| CN Hyi | CN | 17653 | 12884 | 6.66 | 195.8 | F6V | W UMa variable | ||||
| η1 Hyi | η1 | 11733 | 8751 | 6.77 | −0.03 | 748 | B9V | suspected variable | |||
| HD 10180 | 10180 | 7599 | 7.33 | 4.36 | 128 | G1V | has six confirmed planets and three unconfirmed planets | ||||
| HD 20003 | 20003 | 14530 | 8.37 | 143 | G8V | has two planets | |||||
| HD 19918 | BT | 19918 | 14026 | 9.35 | 801 | Ap... | rapidly oscillating Ap star | ||||
| HD 2685 | 2685 | 9.59 | 646 | Ap... | has a planet | ||||||
| WASP-126 | 10.8 | 763 | G2 | has a transiting planet | |||||||
| VW Hyi | VW | 14.4 | SU UMa variable, | ||||||||
| SMSS J031300.36-670839.3 | 14.7 | K | oldest known star as of 2014 | ||||||||
| WX Hyi | WX | 14.85 | SU UMa variable, | ||||||||
| BL Hyi | BL | 14.9 | Am | AM Her variable and eclipsing binary, |